| Henry Augustus Reeves | |
| State: | New York |
| Term Start: | March 4, 1869 |
| Term End: | March 3, 1871 |
| Predecessor: | Stephen Taber |
| Successor: | Dwight Townsend |
| Birth Date: | 7 December 1832 |
| Birth Place: | Sag Harbor, New York, US |
| Death Place: | Greenport, New York, US |
| Alma Mater: | Union College, Schenectady, New York |
| Party: | Democratic |
Henry Augustus Reeves (December 7, 1832 – March 4, 1916) was an American lawyer and politician who served one term as a U.S. Representative from New York from 1869 to 1871.
Born in Sag Harbor, New York, Reeves attended private schools in Sag Harbor, the Southampton Academy, the University of Michigan at Ann Arbor for three years, and graduated from Union College, Schenectady, New York, in 1852. He studied law. He was admitted to the bar.
He edited the Republican Watchman in Greenport from 1858 until his death.
Reeves was elected as a Democrat to the Forty-first Congress (March 4, 1869 – March 3, 1871). He resumed newspaper interests.
He was the supervisor of Southold Town from 1872 to 1894. He was a member of the New York State Assembly (Suffolk Co.) in 1887. He served as member of the State commission in lunacy from 1889 to 1897.
He died in Greenport, New York on March 4, 1916. He was interred in Southampton Cemetery, Southampton, New York.