Jim Thomas (tennis) ATP Doubles finals: 13 (6–7) ATP Doubles finals: 13 (6–7)

| Outcome | Date_ | Tournament | Surface | Partnering | Opponents_in_the_final | Score |
|---|---|---|---|---|---|---|
| Winner | July 19, 2004 | Indianapolis, United States | Hard (O) | Jordan Kerr | Wayne Black Kevin Ullyett | 6-7 (7–9) , 7-6 (7–3) , 6-3 |
| Runner-up | January 31, 2005 | Delray Beach, United States | Hard (O) | Jordan Kerr | Simon Aspelin Todd Perry | 3–6, 3–6 |
| Winner | July 4, 2005 | Newport, United States | Grass (O) | Jordan Kerr | Graydon Oliver Travis Parrott | 7–6 (7–5) , 7–6 (7–5) |
| Runner-up | February 13, 2006 | San Jose, United States | Hard (I) | Paul Goldstein | Jonas Björkman John McEnroe | 6–7 (2–7) , 6-4, [7–10] |
| Winner | May 22, 2006 | Pörtschach, Austria | Clay (O) | Paul Hanley | Oliver Marach Cyril Suk | 6–3, 4–6, [10-5] |
| Runner-up | July 17, 2006 | Indianapolis, United States | Hard (O) | Paul Goldstein | Bobby Reynolds Andy Roddick | 4–6, 4–6 |