Trowbridge is a surname. Notable people with the surname include:
Alexander Buel Trowbridge (1929–2006), U.S. Secretary of Commerce under President Lyndon Johnson Augustus Trowbridge (1870–1934), American physicist and professor Bill Trowbridge (1930–2019), British physicist and engineer Bob Trowbridge (1930–1980), American professional baseball player Charles Trowbridge (1882–1967), American film actor Charles Christopher Trowbridge (1800–1883), American explorer, politician, businessman and ethnographer of Native American cultures Charles T. Trowbridge (1835–1907), American politician Edmund Trowbridge (1709–1793), judge during the Boston Massacre trial Elton Trowbridge (1904–1974), member of the Wyoming House of Representatives Glenn E. Trowbridge (born 1943), American politician John Trowbridge (physicist) (1843–1923), American physicist John Todd Trowbridge (1780–1858), member of the Wisconsin Territorial Legislature John Townsend Trowbridge (1827–1916), American author Josiah Trowbridge (1785–1862), American politician N. C. Trowbridge (1815–1879), American slave trader Peter Trowbridge, American landscape architect Richard Trowbridge (1920–2003), Royal Navy rear-admiral and Governor of Western Australia Rowland E. Trowbridge (1821–1881), American politician Samuel Beck Parkman Trowbridge (1862–1925), partner in Trowbridge & Livingston architectural practice Stephen V. R. Trowbridge (Michigan Attorney General) (1855–1891), American lawyer and politician Stephen V. R. Trowbridge (Michigan legislator) (1794–1859), American politician Thomas E. Trowbridge (1930–2009), member of both houses of the Wyoming State Legislature William P. Trowbridge (1828–1892), American mechanical engineer, military officer and naturalist