Ľubomír Feldek (* 9 October 1936, Žilina, Czechoslovakia) is a Slovak poet, writer, playwright, and translator. He is married to Oľga Feldeková.

Feldek is the author of several books of poetry (Kriedový kruh, Paracelsus, and Milovanie pred usnutím), the novel Van Stiphout, and several plays including Teta na zjedenie or Jánošík podľa Vivaldiho. He translates works of modern world poets (Alexander Blok, Vladimir Mayakovsky, or Guillaume Apollinaire) as well as classical plays (such as those by Sophocles and William Shakespeare). He has also written a couple of books for children, most notably the Modrá kniha rozprávok and Zelená kniha rozprávok illustrated by Albín Brunovský. According to the Index Translationum statistics, he is among the top ten most translated authors writing in Slovak.

In January 1989 he protested against the arrest of Václav Havel and signed a political manifesto A Couple of Sentences. During the Velvet Revolution he closely cooperated with the movement Public Against Violence, which transformed itself into a political party later on.