Alexander Geringas (b. 1971), more recently credited as Alex Geringas, is a Russian-born musician, composer, and actor who has worked primarily in Germany. He was a cast member on Sesamstrasse, the German co-production of Sesame Street, as musician Alex from 1997 until 2000. After relocating to Los Angeles and focusing mainly on composing, Geringas co-wrote Miss Piggy's "I'm Sorry" song for the 2015 The Muppets episode "Walk the Swine."
As an actor, Geringas appeared in the 2002 Costa-Gavras film Amen. and episodes of the German TV series Die Pfefferkörner, Die Kommissarin, and Die Rettungsflieger. As a composer, he scored the German Hanni & Nanni movies and, after relocating to Los Angeles, several TV movies for the Hallmark Channel. Animation scores and themes include All Hail King Julien, Ice Age: Collision Course (the end title song), the Netflix Voltron series, and Home: Adventures with Tip & Oh. He co-wrote the Kelly Clarkson song "Dark Side."