Introduction
As we approach 2025, the importance of internship letters in career preparation cannot be overstated. These letters serve as critical tools for students and professionals alike, helping to bridge the gap between academic pursuits and real-world experience. Whether you’re applying for an internship, requesting a recommendation, or expressing gratitude for an opportunity, a well-crafted internship letter can make all the difference in your career trajectory.
In this article, we’ll explore over 16 different types of internship letters that are essential for career preparation in 2025. From application letters to thank-you notes, these examples will provide you with the templates and inspiration you need to excel in your professional journey. Each letter is designed to be formal, concise, and impactful, ensuring you make the best possible impression.
1. Internship Application Letter
John Doe
123 Main Street
New York, NY 10001
February 15, 2025
Ms. Jane Smith
Hiring Manager
Tech Innovators Inc.
456 Silicon Valley
San Francisco, CA 94105
Dear Ms. Smith,
I am writing to express my interest in the Software Development Internship position at Tech Innovators Inc. As a third-year computer science student at Stanford University, I am eager to apply my skills in a dynamic and innovative environment.
My academic background includes coursework in advanced programming and algorithm design, and I have successfully led a team project to develop a mobile application. I am confident that my technical skills and passion for innovation align with your team’s goals.
Thank you for considering my application. I look forward to the opportunity to contribute to your esteemed organization.
Sincerely,
John Doe
2. Internship Acceptance Letter
Emily Johnson
789 Oak Lane
Chicago, IL 60611
March 10, 2025
Mr. Michael Brown
Internship Coordinator
Green Energy Solutions
321 Renewable Drive
Denver, CO 80203
Dear Mr. Brown,
I am thrilled to accept the offer for the Renewable Energy Internship position at Green Energy Solutions. I am eager to contribute to your team’s mission to develop sustainable energy solutions while gaining invaluable hands-on experience.
I am particularly excited about the opportunity to work on the solar panel efficiency project. I am confident that my background in environmental engineering will enable me to make meaningful contributions to your team.
Thank you for this opportunity. I look forward to starting on May 1, 2025, and to a productive and enriching internship experience.
Sincerely,
Emily Johnson
3. Internship Recommendation Request Letter
Sarah Lee
456 Maple Street
Los Angeles, CA 90012
January 20, 2025
Professor David Wilson
Department of Business Administration
University of California, Los Angeles
123 UCLA Drive
Los Angeles, CA 90095
Dear Professor Wilson,
I hope this letter finds you well. I am reaching out to request a letter of recommendation for my upcoming internship application at Goldman Sachs. As my professor for the Advanced Financial Markets course, I believe your endorsement would carry significant weight.
Your insights into my academic performance and my leadership role in the UCLA Investment Club would be invaluable in helping me stand out as a candidate. I would greatly appreciate it if you could highlight my analytical skills and dedication to the field of finance.
Please let me know if you need any additional information or documents to make the recommendation process smoother. Thank you for considering my request.
Sincerely,
Sarah Lee
4. Internship Thank-You Letter
James Carter
321 Pine Road
Seattle, WA 98101
August 25, 2025
Ms. Laura Davis
Internship Supervisor
Microsoft Corporation
654 Technology Parkway
Redmond, WA 98052
Dear Ms. Davis,
I wanted to take a moment to express my heartfelt gratitude for the incredible internship experience I had at Microsoft this summer. The opportunity to work on the Azure Cloud Development team was both challenging and rewarding, and I learned so much during my time here.
I particularly appreciate the mentorship and guidance you provided throughout the internship. Your feedback on my projects and your insights into the industry were invaluable. I am confident that the skills and knowledge I gained will greatly benefit my future career.
Thank you again for your support and for making this internship such a meaningful experience. I hope to stay in touch and potentially contribute to Microsoft’s continued success in the future.
Sincerely,
James Carter
5. Internship Offer Letter
Amazon HQ
987 River Drive
Arlington, VA 22209
April 5, 2025
Alexandra Martinez
456 Cedar Lane
Austin, TX 78704
Dear Alexandra,
We are pleased to offer you the position of Marketing Intern at Amazon for the summer of 2025. We were impressed by your academic achievements and your passion for digital marketing, and we believe you would be a great fit for our team.
The internship will begin on June 1, 2025, and will last for 12 weeks. You will be working closely with our marketing team to develop and execute campaigns, analyze market trends, and contribute to our social media strategy. The stipend for this position is $20 per hour, and you will also receive a $1,000 housing allowance.
Please confirm your acceptance by signing and returning one copy of this letter by April 19, 2025. We look forward to welcoming you to the Amazon team!
Sincerely,
Rachel Green
Internship Program Manager
6. Internship Confirmation Letter
Google LLC
321 Bay View Drive
Mountain View, CA 94043
May 8, 2025
Olivia Bennett
654 Maple Avenue
Boston, MA 02115
Dear Olivia,
We are pleased to confirm your internship placement with Google’s Engineering Team for the summer of 2025. As discussed, your internship will begin on June 3, 2025, and will conclude on August 30, 2025.
During your time with us, you will be working on the development of our new AI-powered search algorithms. You will be paired with a mentor who will guide you through the project and provide feedback on your progress.
Please find attached the detailed internship schedule and a map of our campus. If you have any questions or need further assistance, do not hesitate to reach out to our internship coordinator.
We look forward to seeing the contributions you will make to our team.
Sincerely,
Daniel Lee
Internship Program Director
7. Internship Request for Extension Letter
Robert Taylor
789 Oak Street
Dallas, TX 75201
August 15, 2025
Ms. Sophia Garcia
Internship Coordinator
Deloitte Consulting
321 Business Park Drive
Chicago, IL 60601
Dear Ms. Garcia,
I hope this letter finds you well. I am writing to request an extension of my internship at Deloitte Consulting, which is currently set to end on September 1, 2025. I have thoroughly enjoyed my time with the team and believe that an extension would allow me to contribute further to our ongoing projects.
I have been working on the financial analysis project for the past three months, and I am eager to see it through to completion. I am confident that my continued involvement will not only benefit the team but also provide me with additional learning opportunities.
Please let me know if this is feasible and if there are any further steps I need to take. I appreciate your consideration and look forward to your response.
Sincerely,
Robert Taylor
8. Internship Resignation Letter
Jessica White
654 Pine Road
Miami, FL 33101
July 20, 2025
Mr. William Thompson
Internship Supervisor
NASA Research Center
987 Space Drive
Houston, TX 77058
Dear Mr. Thompson,
It is with a mix of gratitude and regret that I submit my resignation from the NASA Research Internship Program, effective August 1, 2025. Due to unforeseen personal circumstances, I must return to Miami to address family obligations.
I have truly enjoyed my time at NASA and have learned so much from the incredible team here. I am deeply sorry for any inconvenience this may cause and am committed to ensuring a smooth transition of my responsibilities.
Thank you for the opportunity to be part of such an inspiring organization. I hope to have the chance to contribute to NASA’s mission in the future.
Sincerely,
Jessica White
9. Internship Follow-Up Letter
Daniel Brooks
321 Cedar Lane
Atlanta, GA 30301
March 25, 2025
Ms. Emily Chen
Internship Coordinator
Coca-Cola Headquarters
654 Corporate Drive
Atlanta, GA 30301
Dear Ms. Chen,
I am writing to follow up on my internship application for the Marketing Department at Coca-Cola. It has been two weeks since I submitted my application, and I wanted to express my continued interest in the opportunity.
I believe my skills in digital marketing and my passion for brand development align perfectly with Coca-Cola’s goals. I would be thrilled to discuss how I can contribute to your team this summer.
Please let me know if there is any additional information I can provide to support my application. I look forward to the possibility of working with such an iconic brand.
Sincerely,
Daniel Brooks
10. Internship Completion Letter
Facebook Headquarters
789 Technology Drive
Menlo Park, CA 94025
September 1, 2025
Samuel Lewis
321 Oak Avenue
San Jose, CA 95101
Dear Samuel,
Congratulations on successfully completing your internship with Facebook’s Product Development Team. Over the past 12 weeks, you have demonstrated exceptional skill and dedication, making significant contributions to our projects.
Your work on the new user interface design was particularly impressive, and your ability to collaborate with the team has been outstanding. We are grateful for the fresh perspectives and ideas you brought to our organization.
As you move forward in your career, we have no doubt that you will achieve great things. Please stay in touch, and we hope to see you again at Facebook in the future.
Sincerely,
Mark Zuckerberg
CEO, Facebook
11. Internship Reference Letter
Apple Inc.
456 Innovation Drive
Cupertino, CA 95014
October 10, 2025
Ms. Olivia Brown
789 Maple Street
San Francisco, CA 94105
Dear Ms. Brown,
It is with great pleasure that I write this letter of recommendation for you, based on your outstanding performance during your internship with Apple’s Design Team. Your creativity, work ethic, and ability to think outside the box made you an invaluable asset to our team.
During your time at Apple, you played a key role in the development of our new product line, demonstrating exceptional problem-solving skills and a deep understanding of user experience design. Your contributions were instrumental in helping us meet our project deadlines.
I have no doubt that you will excel in any future endeavor you pursue. Please feel free to share this letter with any prospective employers or academic institutions.
Sincerely,
Tim Cook
CEO, Apple Inc.
12. Internship Program Evaluation Letter
Tesla Motors
321 Electric Avenue
Palo Alto, CA 94303
November 5, 2025
Mr. James Wilson
654 Green Road
Fremont, CA 94539
Dear Mr. Wilson,
Thank you for completing the Tesla Motors Internship Program evaluation survey. Your feedback is invaluable in helping us improve and enhance the experience for future interns.
We are pleased to hear that you found the program challenging and rewarding. Your suggestions regarding the addition of more hands-on training sessions are being considered for implementation in our 2026 program.
We appreciate your contributions to our team and are glad that you found the experience beneficial. We hope to see you again at Tesla in the future.
Sincerely,
Elon Musk
CEO, Tesla Motors
13. Internship Offer Withdrawal Letter
Google LLC
987 Innovation Parkway
Mountain View, CA 94043
May 15, 2025
Alexandra Lee
456 Tech Drive
San Jose, CA 95101
Dear Alexandra,
We regret to inform you that we are withdrawing the offer for the Software Engineering Internship position at Google. This decision was not made lightly, and we sincerely apologize for any inconvenience this may cause.
Due to unforeseen business circumstances, we are unable to move forward with the internship program as planned. We understand that this news may be disappointing and appreciate the time and effort you invested in the application process.
We hope you will consider applying for future opportunities at Google and wish you the best of luck in your career endeavors.
Sincerely,
Sundar Pichai
CEO, Google
14. Internship Program Announcement Letter
IBM Corporation
321 Research Drive
Armonk, NY 10504
December 1, 2025
Dr. Michael Johnson
Dean of Engineering
Massachusetts Institute of Technology
456 Massachusetts Avenue
Cambridge, MA 02139
Dear Dr. Johnson,
We are excited to announce the launch of IBM’s 2026 Global Internship Program, designed to provide students with hands-on experience in cutting-edge technologies such as AI, quantum computing, and blockchain.
This program offers a unique opportunity for students to work alongside our world-class engineers and researchers, gaining invaluable industry experience while contributing to innovative projects. The application process will open on January 1, 2026, and will close on March 31, 2026.
We encourage your students to apply and be part of this transformative experience. Please find attached the program details and application guidelines.
Sincerely,
Arvind Krishna
CEO, IBM
15. Internship Program Cancellation Letter
Intel Corporation
654 Technology Boulevard
Santa Clara, CA 95054
June 10, 2025
Ms. Sophia Martinez
789 Innovation Lane
Portland, OR 97201
Dear Ms. Martinez,
It is with regret that we inform you of the cancellation of the Intel Internship Program for the summer of 2025. This decision was made due to unforeseen operational challenges that have impacted our ability to host the program as planned.
We understand that this news may be disappointing, and we sincerely apologize for any inconvenience this may cause. We appreciate your interest in Intel and hope you will consider applying for future opportunities with us.
We are exploring alternative ways to engage with students and will announce any new programs as they become available.
Sincerely,
Pat Gelsinger
CEO, Intel
16. Internship Program Completion Certificate
Microsoft Corporation
321 One Microsoft Way
Redmond, WA 98052
September 15, 2025
Mr. David Wilson
654 Pine Road
Seattle, WA 98101
Dear Mr. Wilson,
Congratulations on successfully completing the Microsoft Internship Program! We are pleased to present you with this certificate in recognition of your hard work and dedication during your time with us.
Your contributions to the Azure Cloud Development Team were outstanding, and we are grateful for the fresh ideas and enthusiasm you brought to our projects. This certificate serves as a testament to your skills and commitment to excellence.
We wish you continued success in your academic and professional pursuits and hope to see you again at Microsoft in the future.
Sincerely,
Satya Nadella
CEO, Microsoft
Conclusion
These 16 internship letters represent a comprehensive toolkit for anyone preparing for or engaging in an internship in 2025. Whether you’re applying for a position, requesting a recommendation, or expressing gratitude, these templates provide the professional tone and structure you need to make a lasting impression. Remember, a well-crafted internship letter is not just a formalityit’s a crucial step in building your career.