William James (1842–1910) was an American psychologist and philosopher.

William James may also refer to:

Military William James (Royal Navy officer, born 1881) (1881–1974), British admiral William C. James (1896–1974), U.S. Marine Corps general William James (Australian general) (1930–2015), Australian Army general William K. James (1935–2022), U.S. Air Force general William Levis James (1833–1903), American military officer

Politics Sir William James, 1st Baronet (1721–1783), Bombay Marine officer and politician William James (Carlisle MP) (1791–1861), member of parliament for Carlisle 1820–1826 William A. James (1838–1893), American politician in Illinois William H. James (1831–1920), governor of Nebraska W. Frank James (1873–1945), U.S. representative from Michigan William S. James (1914–1993), state treasurer of Maryland William James (MP for Kent), member of parliament for Kent, 1654–59 Bill James (politician) (William G. James, 1930–2022), American politician

Sports William James (cricketer) (fl. 1858–1881), English cricketer William James (rugby league), rugby league footballer in the 1920s and 1930s William James (bowls) (born 1969), Eswatini (formerly named Swaziland) lawn bowler William James (American football) (born 1979), American footballer Knucks James (William James, 1878–1966), American baseball player Bill James (American football) (William Nelson James, 1897–1969), American college football player and coach Bill James (pitcher, born 1887) (William Henry James, 1887–1942), American baseball player Bill James (pitcher, born 1892) (William Lawrence James, 1892–1971), American baseball player Billy James (Australian footballer) (William Roy James, 1900–1966), Australian rules footballer Billy James (Welsh footballer) (William John James, 1921–1980), Welsh professional footballer Billy James (footballer, born 1891) (William Ebsworth James, 1891–1960), English footballer Billy James (rugby union) (William John James, born 1956), Welsh rugby union player Will James (rugby, born 1902) (William P. James, 1902–1972), Welsh rugby union and league player

Other William James (bishop) (1542–1617), English academic and bishop of Durham, 1606–17 William James (slave trader) (1735–1798), operating out of the Port of Liverpool William James (railway promoter) (1771–1837), British William James (naval historian) (1780–1827), British naval historian during the Age of Sail William Milbourne James (judge) (1807–1881), British judge William James (engineer) (1854–1889), British engineer William Dodge James (1854–1912), big game hunter William James (photographer) (1866–1948), British-Canadian photographer William James (priest) (1832–1896), Welsh Anglican priest William P. James (1870–1940), U.S. federal judge William Warwick James (1874–1965), British dentist and maxillofacial surgeon William G. James (1892–1977), Australian pianist William "Froggie" James (died 1909), African-American man lynched in Cairo, Illinois Billy James (drummer) (William James, 1936–2009), American jazz drummer Will James (artist) (William Roderick James, 1892–1942), Canadian-born western artist and author

See also Willie James (1920–2016), American civil rights activist Willy F. James Jr. (1920–1945), Medal of Honor recipient Bill James (disambiguation) Billy James (disambiguation) Will James (disambiguation) James Williams (disambiguation)