Coe Searing Downing (April 7, 1791 – September 12, 1847) was an American judge and politician from New York.
In 1820, Downing remarried to Jerusha Havens (1791–1876), sister of Brookhaven Town Supervisor John Symes Havens (1796–1864).
Downing was a member of the New York State Assembly (Kings Co.) in 1830, 1831, 1832 and 1833.
At the time of his death, he was a justice of the Municipal Court of Brooklyn.
He was buried at the Jackson Cemetery in Wantagh, New York.