Ralph Thompson may refer to:
Ralph Thompson (footballer) (1892–1916), English amateur footballer Ralph Thompson (illustrator) (1913–2009), British artist and book illustrator Ralph Thompson (poet) (born 1928), Jamaican businessman, educational activist, artist and poet Ralph C. Thompson (c. 1947–2014), Canadian judge and lawyer Ralph Gordon Thompson (born 1934), United States federal judge Sir Ralph Wood Thompson (1830–1902), British civil servant Smack Thompson (Ralph Sandford Thompson, 1900–1981), college football player