Alena Penz (also credited as Alena Penc or Alena Pencová; born August 16, 1949, in Prague, Czechoslovakia) is a Czech actress who became well known in West Germany during the 1970s. She began her career in Czechoslovak cinema, appearing in films of the Czechoslovak New Wave, before leaving the country after the suppression of the Prague Spring.

Continuing her career in West Germany from 1969 onward, Penz was frequently cast in popular softcore comedies and entertainment films of the era, often under a Germanized version of her name. She also appeared in international productions, including Italian films, before gradually retiring from acting in the early 1980s. Around 1990, she returned to Czechoslovakia.