1931 U.S. National Championships – Men's Doubles
| Men's Doubles | |
|---|---|
| 1931 U.S. National Championships | |
| Champion |
 Wilmer Allison John Van Ryn |
| Runner-up |
Gregory Mangin Berkeley Bell |
| Final score | 6–4, 8–6, 6–3 |
The Men's Doubles tennis competition, part of the 1931 U.S. National Championships, was held from August 25 to September 2, 1931 on the outdoor grass courts at the Longwood Cricket Club in Chestnut Hill, MA, United States. Third-seeded Wilmer Allison and John Van Ryn defeated fourth-seeded Gregory Mangin and Berkeley Bell 6–4, 8–6, 6–3 in the final to win the title.
Nine teams of players were seeded for the men's doubles event; eight U.S. teams and one foreign team. Wilmer Allison and John Van Ryn were the champion; others show the round in which they were eliminated.
The eight seeded U.S. teams were:
The foreign seeded team was:
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