Niels Giffey (born 8 June 1991) is a German professional basketball player for Bayern Munich of the Basketball Bundesliga (BBL) and the EuroLeague. Standing at 6 ft 7 in (2.01 m), he plays the shooting guard and small forward positions. He also represents the Germany national team.

He played collegiately for the University of Connecticut Huskies men's basketball team. In his freshman year, he was part of the team that won the 2011 NCAA Men's Division I Basketball Tournament. He was again one of UConn's key players when they won the NCAA tournament for a second time in four years in 2014. Giffey and his UConn teammates Shabazz Napier and Tyler Olander are the only Division I men's basketball players in history to have won national championships as freshmen and seniors.