The United States Senate Committee on Coast Defenses was created in 1885 to deal with the country's coastal defenses. It was abolished in 1921.

Chairmen of the Committee on Coast Defenses, 1885-1921

• Joseph Dolph (R-OR) 1885-1891
• Watson Squire (R-WA) 1891-1893
• John Gordon (D-GA) 1893-1895
• Watson Squire (R-WA) 1895-1897
• Joseph R. Hawley (R-CT) 1897
• George W. McBride (R-OR) 1898-1901
• John H. Mitchell (R-OR) 1901-1905
• Philander C. Knox (R-PA) 1905-1908
• George Nixon (R-NV) 1908-1911
• Charles Curtis (R-KS) 1911-1913
• James E. Martine (D-NJ) 1913-1914
• Blair Lee I (D-MD) 1914-1917
• Charles S. Thomas (D-CO) 1917-1919
• Joseph S. Frelinghuysen (R-NJ) 1919-1921