Introduction to International Internship Letters for 2025
As the world becomes increasingly interconnected, international internships have become a vital component of career development for students and young professionals. Securing an international internship in 2025 requires a well-crafted internship letter that highlights your skills, passion, and suitability for the role. This guide provides 16+ professional internship letter examples tailored for international opportunities in 2025.
These letters are designed to help you stand out in a competitive global market. Whether you’re applying for an internship in Europe, Asia, or the Americas, the right letter can make all the difference. Use these examples as templates to craft your own compelling internship letter.
1. International Internship Application Letter
John Doe
123 Maple Street
New York, NY 10001
United States
February 15, 2025
Dear Hiring Manager,
I am writing to express my strong interest in the international internship program at GlobalTech Solutions. With a background in computer science and a passion for innovation, I am eager to contribute to your team while gaining invaluable experience.
I have developed skills in software development and data analysis, which I believe align perfectly with your team’s objectives. I am particularly drawn to GlobalTech’s commitment to global innovation and collaboration.
I look forward to the opportunity to discuss how my skills and experiences can benefit your team. Thank you for considering my application.
Sincerely,
John Doe
2. Internship Acceptance Letter
Jane Smith
456 Oak Lane
London, NW1 7HE
United Kingdom
March 10, 2025
Dear Dr. Smith,
I am delighted to accept the offer to join the international internship program at GlobalHealth Initiatives. This opportunity aligns perfectly with my academic background in public health and my desire to work in a global setting.
I am confident that this internship will provide me with the hands-on experience I need to further my career in public health. I am particularly excited about the opportunity to work on the global vaccination project.
Thank you for this incredible opportunity. I look forward to contributing to your team.
Best regards,
Jane Smith
3. Internship Reference Letter
Dr. Michael Johnson
University of California
789 Pine Street
Los Angeles, CA 90012
United States
April 5, 2025
To Whom It May Concern,
It is with great pleasure that I write this letter of recommendation for Ms. Emily Carter, who has applied for the international internship program at your esteemed organization.
During her time at the University of California, Emily has consistently demonstrated exceptional academic excellence and a strong commitment to her field of study. Her ability to work in a team and her leadership skills make her an ideal candidate for your program.
I have no doubt that Emily will make valuable contributions to your organization. Please feel free to contact me if you require any further information.
Sincerely,
Dr. Michael Johnson
4. Internship Request Letter
Sarah Williams
321 Cedar Drive
Toronto, ON M4B 1B5
Canada
May 2, 2025
Dear Mr. Thompson,
I am writing to express my interest in the international internship program at GreenEnergy Solutions. I am currently pursuing a degree in environmental engineering and am eager to gain practical experience in the renewable energy sector.
I have completed several projects related to sustainable energy, including the development of a solar-powered water purification system. I am confident that my skills and passion for environmental sustainability would make me a valuable asset to your team.
I would be grateful for the opportunity to discuss how I can contribute to your organization. Thank you for considering my application.
Sincerely,
Sarah Williams
5. Internship Offer Letter
GlobalTech Solutions
1234 Broad Street
Frankfurt, 60313
Germany
June 15, 2025
Dear Mr. Doe,
We are pleased to offer you the position of International Intern at GlobalTech Solutions. We were impressed by your academic achievements and your passion for innovation in the tech industry.
The internship will commence on July 1, 2025, and will last for six months. During this time, you will work closely with our development team on several high-profile projects. You will also have the opportunity to participate in global team meetings and workshops.
Please confirm your acceptance by signing and returning one copy of this letter to us by June 30, 2025.
Congratulations, and welcome to GlobalTech Solutions.
Sincerely,
Dr. Anna Müller
Head of Human Resources
6. Internship Confirmation Letter
Alex Johnson
567 River Road
Sydney, NSW 2000
Australia
July 10, 2025
Dear Ms. Smith,
I am writing to confirm my acceptance of the international internship position at GlobalHealth Initiatives. I am thrilled to have the opportunity to work with such a prestigious organization and contribute to your mission.
I understand that the internship will commence on August 1, 2025, and I am fully committed to dedicating my time and efforts to the success of your team. I am particularly excited about the opportunity to work on the global vaccination project.
Please find attached the signed offer letter. Thank you for this incredible opportunity. I look forward to working with you.
Best regards,
Alex Johnson
7. Internship Decline Letter
Emily Davis
678 Lake Street
Chicago, IL 60611
United States
August 5, 2025
Dear Dr. Johnson,
I regret to inform you that I must decline the offer for the international internship at GlobalTech Solutions. This was not an easy decision, as I am truly impressed by your organization and the opportunities you provide.
Due to unforeseen personal circumstances, I am unable to participate in the program at this time. I am deeply disappointed, as I was looking forward to contributing to your team and gaining valuable experience.
Thank you for the opportunity, and I hope to have the chance to work with GlobalTech Solutions in the future.
Sincerely,
Emily Davis
8. Internship Extension Request Letter
Michael Brown
789 Ocean Drive
Miami, FL 33101
United States
September 10, 2025
Dear Mr. Thompson,
I am writing to request an extension of my international internship at GlobalEnergy Solutions. I have thoroughly enjoyed my time with the team and have learned a great deal during my tenure here.
I have been working on several key projects, including the development of a new renewable energy system. I believe that an extension would allow me to see these projects through to completion and further contribute to the success of your team.
I would be grateful if we could discuss this possibility further. Thank you for considering my request.
Sincerely,
Michael Brown
9. Internship Completion Letter
GlobalEnergy Solutions
1234 Sunset Boulevard
Los Angeles, CA 90012
United States
October 15, 2025
Dear Ms. Williams,
We are pleased to confirm that you have successfully completed the international internship program at GlobalEnergy Solutions. Your contributions to our team have been invaluable, and we are grateful for the hard work and dedication you have shown during your time with us.
Your participation in the development of our new renewable energy system has been particularly noteworthy. Your skills and enthusiasm have made a significant impact on our team.
We wish you all the best in your future endeavors and hope that you will consider GlobalEnergy Solutions for any future opportunities.
Sincerely,
Dr. Sarah Lee
Program Director
10. Internship Follow-Up Letter
David Wilson
321 Pine Street
Vancouver, BC V6C 1A1
Canada
November 20, 2025
Dear Mr. Smith,
I hope this letter finds you well. I am writing to follow up on my application for the international internship program at GlobalHealth Initiatives. It has been three weeks since I submitted my application, and I wanted to express my continued interest in the opportunity.
I believe that my background in public health and my passion for global health initiatives make me a strong candidate for this program. I would be grateful for any update you can provide regarding the status of my application.
Thank you for considering my application. I look forward to the opportunity to discuss how I can contribute to your team.
Sincerely,
David Wilson
11. Internship Thank-You Letter
Sophia Martinez
456 Maple Avenue
Madrid, 28001
Spain
December 5, 2025
Dear Dr. García,
I am writing to express my sincere gratitude for the opportunity to participate in the international internship program at GlobalTech Solutions. This experience has been invaluable to my personal and professional growth.
I have learned so much during my time with the team, and I am grateful for the support and guidance you have provided. The opportunity to work on global innovation projects has been particularly rewarding.
Thank you again for this incredible opportunity. I will always look back on this experience with fond memories and a deep sense of accomplishment.
Best regards,
Sophia Martinez
12. Internship Recommendation Letter
Dr. Emma Taylor
University of Oxford
123 High Street
Oxford, OX1 4DB
United Kingdom
January 10, 2025
To Whom It May Concern,
It is with great enthusiasm that I write this letter of recommendation for Mr. Liam O’Connor, who has applied for the international internship program at your organization.
During his time at the University of Oxford, Liam has consistently demonstrated exceptional academic excellence and a strong commitment to his field of study. His ability to work in a team and his leadership skills make him an ideal candidate for your program.
I have no doubt that Liam will make valuable contributions to your organization. Please feel free to contact me if you require any further information.
Sincerely,
Dr. Emma Taylor
13. Internship Application Follow-Up Letter
Noah Green
789 River Road
Paris, 75001
France
February 20, 2025
Dear Ms. Dupont,
I hope this letter finds you well. I am writing to follow up on my application for the international internship program at GlobalEnergy Solutions. It has been four weeks since I submitted my application, and I wanted to express my continued interest in the opportunity.
I believe that my background in environmental engineering and my passion for renewable energy make me a strong candidate for this program. I would be grateful for any update you can provide regarding the status of my application.
Thank you for considering my application. I look forward to the opportunity to discuss how I can contribute to your team.
Sincerely,
Noah Green
14. Internship Program Completion Certificate
GlobalHealth Initiatives
1234 Broad Street
Geneva, 1200
Switzerland
March 15, 2025
Dear Ms. Smith,
We are pleased to present you with this certificate of completion for the international internship program at GlobalHealth Initiatives. Your hard work and dedication have been outstanding, and we are grateful for the contributions you have made to our team.
During your time with us, you have demonstrated exceptional skills and a strong commitment to global health initiatives. We are confident that the experience you have gained will be invaluable to your future career.
Please accept our warmest congratulations on your successful completion of the program. We wish you all the best in your future endeavors.
Sincerely,
Dr. Michael Johnson
Program Director
15. Internship Program Evaluation Letter
Alex Johnson
567 Cedar Drive
Melbourne, VIC 3000
Australia
April 10, 2025
Dear Mr. Thompson,
I am writing to provide feedback on the international internship program at GlobalTech Solutions. Overall, my experience was extremely positive, and I am grateful for the opportunity to have participated in the program.
The program provided me with invaluable hands-on experience and the opportunity to work on global innovation projects. The support and guidance provided by the team were outstanding, and I have learned a great deal during my time with the organization.
I would highly recommend this program to anyone interested in gaining international experience in the tech industry. Thank you for providing such an exceptional opportunity.
Sincerely,
Alex Johnson
16. Internship Program Testimonial Letter
Sophia Martinez
678 Pine Street
Barcelona, 08001
Spain
May 5, 2025
Dear Dr. García,
I am writing to express my sincere gratitude for the opportunity to participate in the international internship program at GlobalEnergy Solutions. This experience has been instrumental in my personal and professional development.
I have gained invaluable experience working on global renewable energy projects, and the support and guidance provided by the team have been outstanding. This experience has not only enhanced my technical skills but also broadened my global perspective.
I would highly recommend this program to anyone interested in gaining international experience in the energy sector. Thank you for providing such an exceptional opportunity.
Best regards,
Sophia Martinez
Conclusion
These 16 internship letter examples provide a comprehensive guide for crafting professional and effective letters for international internships in 2025. Whether you’re applying, accepting, or completing an internship, these templates will help you communicate clearly and make a lasting impression. Remember to tailor each letter to the specific opportunity and organization, and don’t hesitate to reach out if you need further assistance.