Trevor D. Traina (born 1968) is an American businessman who served as the United States ambassador to Austria from 2018 to 2021.

[3] Traina attended the Cathedral School for Boys in San Francisco and later graduated from Princeton University with a Bachelor of Arts in politics in 1990.

[8][9] Traina risked controversy for supporting the LGBTQ community by flying a rainbow flag at the Embassy during Vienna Pride despite a ban from the State Department on doing so.

[10] Traina is quoted as having arranged the most high level meetings between Austria and the US in history and bringing about an era of Verbundenheit or "new closeness" between the two countries that had not before been seen.

[15][16] Traina made a major loan of photographs to the Albertina museum in Vienna for the Fall 2021 exhibition American Photography.