Ilsa may refer to:
People Ilsa J. Bick (), American science fiction writer Ilsa Konrads (born 1944), Australian freestyle swimmer
Fictional characters Ilsa Lund, in the 1942 film Casablanca Ilsa, protagonist of a sexploitation film series starting with Ilsa, She Wolf of the SS (1975) Ilsa Brandes, title character of Ilsa (novel), a 1946 novel by Madeleine L'Engle Ilsa Pucci, from the TV series Human Target Ilsa Shickelgrubermeiger, from the TV series The Suite Life of Zack and Cody Ilsa Faust, in the films Mission: Impossible – Rogue Nation (2015), and its sequel Mission: Impossible – Fallout (2018)
ILSA International Law Students Association, a non-profit association of students and lawyers dedicated to the promotion of international law Interstate Land Sales Full Disclosure Act of 1968, US Congressional act passed to facilitate regulation of interstate land sales Iran and Libya Sanctions Act, a 1996 act of the US Congress that imposed economic sanctions on firms doing business with Iran and Libya Intermodalidad de Levante S.A., Iryo, a Spanish operator of high-speed trains Instrument for Lunar Seismic Activity in Chandrayaan-3 will measure the seismicity around the landing site on Moon.
Other uses Tropical Storm Ilsa (disambiguation), various cyclones Ilsa (novel), a 1946 novel by Madeleine L'Engle
See also Ilse (disambiguation)