Löwenthal is a surname. Notable people with this name include:
Gerhard Löwenthal (1922–2002), a German journalist
Johann Löwenthal (1810–1876), a Hungarian Jewish chess player
Leo Löwenthal (1900–1993), a German sociologist
Richard Löwenthal (1908–1991), a German journalist
A variant is Lowenthal:
Bill Lowenthal (1909-1989), an Australian rules footballer
David Lowenthal (born 1923), an American-born British geographer and historian
Jerome Lowenthal (born 1932), an American classical pianist
Margaret Lowenthal (1929-2003), an American politician
Yuri Lowenthal, an American voice actor