Luciano Grostein Huck (born 3 September 1971) is a Brazilian TV host and entrepreneur. Since 2000 he has hosted the TV show Caldeirão do Huck (lit. Huck's Cauldron), aired every Saturday on Brazilian network Rede Globo, and also broadcast to 114 countries, via Globo International.
Since 2017, he has hosted Quem quer ser um milionário?, the licensed Brazilian version of the show, during his Sunday night show Domingão com Huck. When the unlicensed Brazilian version, Show do Milhão, returned to go up against Huck's show in 2021, Milionário won the ratings battle hands-down.