Fränkel (or Fraenkel) is a surname. Notable people with the surname include:
Abraham Fraenkel (1891–1965), German-Israeli mathematician, known for Zermelo–Fraenkel set theory Albert Fraenkel (1864–1938), German physician Albert Fränkel (1848–1916), German physician Aviezri Fraenkel (born 1929), Israeli mathematician Baruch Fränkel-Teomim (1760–1828), rabbi, Talmudist David ben Naphtali Fränkel (c. 1704–1762), German rabbi Eduard Fraenkel (1888–1965), German-English classical scholar Ernst Fränkel (physician) (1844–1921), German gynaecologist Ernst Fraenkel (linguist) (1881–1957), German linguist Ernst Fraenkel (political scientist) (1898–1975), German political scientist Fränkel (born 2000), Canadian singer Gottfried S. Fraenkel (1901–1984), German-American entomologist Hermann Fränkel (1888–1977), German-American classicist Heinz Fraenkel-Conrat (1910–1999), German biochemist Iwan Fränkel (born 1941), Surinamese footballer Jonas Fränkel (1773–1846), German banker and philanthropist Knut Frænkel (1870–1897), Swedish engineer and arctic explorer Leó Frankel (Léo Fränkel) (1844–1896), Hungarian communist revolutionary Naftali Frenkel, 16-year-old killed in the 2014 kidnapping and murder of Israeli teenagers Purrel Fränkel (born 1976), Surinamese footballer Ray Fränkel (born 1982), Dutch Surinamese footballer Samuel Fränkel (1801–1881), German textile manufacturer Sándor Ferenczi (1873–1933), Hungarian psychoanalyst, born Alexander Fränkel
See also Frankel Frankl Frenkel