Klaas Heufer-Umlauf (born 22 September 1983 in Oldenburg) is a German television host, actor and singer.
Heufer-Umlauf is a trained hairdresser. After he won a casting, he started his career as TV host in VIVA Live!, Retro Charts, and Klaas’ Wochenshow. He also appeared in the sitcom Alle lieben Jimmy on RTL and the music video "And No Matches" by Scooter. From June 2009 to March 2011 he co-hosted the late-night talk show MTV Home with Joko Winterscheidt on MTV Germany. From October 2011 to January 2013, they co-hosted NeoParadise on the public broadcaster ZDFneo, which is considered as successor of MTV Home. Also since 2011, Joko and Klaas are hosting several shows on ProSieben, including the game shows 17 Meter, Die Rechnung geht auf uns, and Joko gegen Klaas - Das Duell um die Welt.
In February 2013, they started their new show Circus HalliGalli(2013–2017) on ProSieben, a successor of MTV Home and neoParadise. Later that year, he starred in the movie Großstadtklein, along with Jacob Matschenz and Kostja Ullmann. He is founder and singer of the band Gloria. In September 2013 their first album was released.