Charles Silas Richard Trowbridge (January 10, 1882 – October 30, 1967) was an American film actor. He appeared in 233 films between 1915 and 1958.

Trowbridge was born in Veracruz, Mexico, where his father served in the diplomatic corps of the United States. He ran a coffee plantation in Hawaii before venturing into acting.

Trowbridge's Broadway credits include Dinner at Eight (1932), Ladies of Creation (1931), Congai (1928), The Behavior of Mrs. Crane (1927), We Never Learn (1927), Craig's Wife (1925), It All Depends (1925), The Backslapper (1924), The Locked Door (1924), Sweet Seventeen (1923), The Lullaby (1923), The Last Warning (1922), The Night Call (1921), Just Because (1921), The Broken Wing (1920), Why Worry? (1918), This Way Out (1917), Come Out of the Kitchen (1916) and Daddy Long Legs (1914).

Trowbridge died in Los Angeles, California.