Si (given name)

Si is a given name, which is often a nickname or a short version of Simon, Silas, or other names. It may refer to the following notable people:
 * Si Begg (born 1972), English electronic dance music DJ, musician and record producer
 * Si Bell (1894–1972), American college football player
 * Si Kaddour Benghabrit (1868–1954), Algerian religious leader, translator and interpreter
 * Si Burick (1909–1986), American sports journalist
 * Si Cranstoun (born 1971), British singer
 * Si Frumkin (1930–2009), Lithuanian-born Jew, Holocaust survivor, textile manufacturer and activist in the United States
 * Si Garrett (1913–1967), American politician and attorney
 * Si Genaro (born 1971), British musician
 * Si Gerson (1909–2004), American communist politician and journalist
 * Si Green (1933–1980), American basketball player
 * Si Griffis (1883–1950), Canadian ice hockey player
 * Si Hayden, British musician and composer
 * Si Jenks (1876–1970), American actor
 * Si Johnson (1906–1994), American baseball player
 * Si Kahn (born 1944), American singer-songwriter and activist
 * Si King (born 1966), English television presenter
 * Si Lewen (1918–2016), Polish-American painter and soldier
 * Si Mohand (c. 1848–1905), Berber poet from Kabylie, Algeria
 * Si Mustapha-Müller (1926–1993), German-Algerian revolutionary
 * Si Phili (born 1974), British rapper
 * Si Phyo (born 1990), Burmese actor
 * Si Pitung, 19th century bandit in Indonesia
 * Si Robertson (born 1948), American television personality
 * Si Schroeder (born Simon Kenny), Irish music artist
 * Si Siman (born Ely E. Siman Jr.; 1921–1994), American country music executive
 * Si Spencer (1961–2021), British comic book writer and TV dramatist and editor
 * Si Stebbins, namesake of the Si Stebbins stack in cards
 * Si Yew Ming (born 1979), Malaysian tennis player
 * Si Zentner (1917–2000), American jazz trombonist and big-band leader