The September Stakes was an American Thoroughbred horse race held annually for the twenty-five years between 1884 and 1908 at Sheepshead Bay Race Track in Sheepshead Bay, New York. A race on dirt, it was open to three-year-old horses of either sex.^[1] It was contested at various distances as follows:

• 1884–1891 : 13⁄4 miles
• 1892–1907 : 13⁄8 miles
• 1908 : 11⁄16 miles

First run on September 4, 1884, the race was won by George Lorillard's Louisette. Under Canadian jockey Harry Blaylock the filly led all the way and won with ease.^[2]

The Thomas Clay McDowell colt Batten won the 1899 edition by 20 lengths in a canter with a time of 2:21 4/5 that at the time was only a fraction off the track record.^[3]

The 1908 passage of the Hart–Agnew anti-betting legislation by the New York Legislature under Republican Governor Charles Evans Hughes led to a state-wide shutdown of racing in 1911 and 1912.^[4][5] Sheepshead Bay Race Track officials had no choice but to cancel some races in order to maintain others. As such, the final running of the September Stakes took place on September 8, 1908.^[6][7] A February 21, 1913 ruling by the New York Supreme Court, Appellate Division saw horse racing return in 1913.^[8] However, it was too late for the Sheepshead Bay horse racing facility and it never reopened.^[9][10]

Speed record:

• 2:19.00 @ 13⁄8 miles: Nealon (1906)
• 3:03.00 @ 13⁄4 miles: Peg Woffington (1888)

Most wins by a jockey:

• 2 – Jim McLaughlin (1887, 1889)
• 2 – George M. Odom (1900, 1902)
• 2 – Frank O'Neill (1903, 1904)
• 2 – Willie Simms (1894, 1895)

Most wins by a trainer:

• 2 – Matthew Byrnes (1884, 1889)
• 2 – William Lakeland (1888, 1898)
• 2 – John W. Rogers (1894, 1900)

Most wins by an owner:

• 2 – James Ben Ali Haggin (1885, 1889)
• 2 – William Lakeland (1888, 1898)