Hillel (Hebrew: הלל, lit. 'praise') is a Jewish masculine given name and a surname. It may refer to:

• Hillel the Elder (110 BC–10 AD), Babylonian sage, scholar, and Jewish leader
• Hillel, son of Gamaliel III (3rd century), Jewish scholar
• Hillel II, Jewish communal and religious authority and Nasi of the Jewish Sanhedrin, 320–385
• Hillel ben Eliakim (11th–12th century), Greek rabbi and Talmud scholar
• Hillel ben Samuel (c. 1220–1295), Italian physician, philosopher, and Talmudist
• Hillel ben Naphtali Zevi (1615–1690), Lithuanian rabbi
• Hillel Rivlin (1758–1838), Lithuanian rabbi
• Hillel Paritcher (1795–1864), Russian Chabad rabbi
• Hillel Lichtenstein (1814–1891), Hungarian rabbi and writer
• Hillel Noah Maggid (1829–1903), Russian-Jewish genealogist and historian
• Hillel Yaffe (1864–1936), Russian Jewish physician and Zionist leader
• Hillel Zeitlin (1871–1942), Russian writer in Yiddish and Hebrew
• Hillel Poisic (1881–1953), Ukrainian communal worker and Torah scholar
• Hillel Oppenheimer (1899–1971), German-Israeli botanist
• Hillel Kook (1915–2001), Russian-Jewish Zionist activist, politician, and leader of the Irgun
• Hillel Seidel (1920–1999), Israeli politician
• Hillel Schwartz (1923–2007), Egyptian Jewish politician; founder of the Iskra party
• Hillel Kristal, birth name of Hilly Kristal (1931–2007), American musician and owner of club CBGB in New York City
• Hillel Zaks (1931–2015), Polish-Israeli founder and rosh yeshiva of Yeshivas Knesses Hagedolah
• Hillel Jonathan Gitelman (1932-2015), American nephrologist who described Gitelman Syndrome
• Hillel Furstenberg (born 1935), American-Israeli mathematician
• Hillel Ticktin (born 1937), South African Marxist theorist and economist now at Glasgow University
• Hillel Halkin (born 1939), American-born Israeli translator, writer, and literary critic
• Hillel Weiss (born 1945), Israeli professor of literature and Neo-Zionist
• Hillel Schwartz (1948-2007), American cultural historian, poet and translator
• Hillel Cohen (born 1961), Israeli historian
• Hillel Slovak (1962–1988), Israeli-American guitarist and founding member of the Red Hot Chili Peppers
• Hillel Horowitz (born 1964), Israeli rabbi and politician
• Hillel Roman (born 1975), American-Israeli visual artist
• Hillel Fendel, Israeli journalist
• Hillel Frisch, Israeli political scientist
• Hillel Neuer, Canadian human-rights lawyer and executive director of UN Watch
• Hillel Schenker, Israeli editor
• Hillel Steiner (born 1942), Canadian political philosopher
• Hillel Fuld, Israeli-American technology advisor and blogger

• Simeon ben Hillel (1st century), son of Hillel the Elder
• Mordechai ben Hillel (1250–1298), German rabbi and posek
• Abraham Hillel (1820–1920), Iraqi rabbi
• Yehoshua Bar-Hillel (1915–1975), Israeli philosopher, mathematician, and linguist
• Shlomo Hillel (1923-2021), Iraqi-born Israeli diplomat and politician
• Ayin Hillel (1926–1990), Israeli poet and children's author
• Stéphane Hillel (born 1955) French actor
• Gili Bar-Hillel (born 1974) Israeli English-Hebrew translator

• Hallel, a Jewish prayer