German Šlein (born 28 March 1996) is an Estonian professional footballer who plays as a midfielder for Serbian second tier club Smederevo.

He was loaned out to Czech club FC Vysočina Jihlava for the 2018–19 season.

Ahead of the 2019–20 season, he was loaned out to JK Trans Narva but after playing one game for the club in the Europa League qualification due to an injury and returned to FC Flora.

A few days later, he joined Viljandi JK Tulevik on loan instead.

This biographical article relating to Estonian association football is a stub.