Mayor Eric Garcetti says the Bat-Signal will be lit at L.A.'s City Hall at 9 p.m. Thursday.
In Batman comics, movies and TV shows, the Bat-Signal is a spotlight with the shadow of Batman's winged emblem that is shown on the night sky to call for Batman's help.
West died Friday at age 88.
Garcetti announced the event on Twitter and added the hashtag, #BrightKnight.