Valda Joanne Hansen (November 3, 1932 – July 21, 1993) was an American actress, known for her performances in a number of B-movies in the 1950s and 1970s.
Her most famous role was that of the White Ghost in Ed Wood's Night of the Ghouls (1959).
She had previously played a stripper in Strips Around the World (1955).
She returned to the screen in the 1970s and appeared in movies such as Cain's Cutthroats (1971), Slaughter's Big Rip-Off (1973) and Wham! Bam! Thank You, Spaceman! (1975, in which she was credited as "Zelda").
She also appeared in a 1992 documentary about the filmmaker Ed Wood entitled Flying Saucers over Hollywood: The 'Plan 9' Companion.