Is Donald Sterling Jewish?

Yes Donald Sterling is a Jew. He was born Donald Tokowitz. He changed his name to Sterling. David Suissa reports that:

...he grew up in Boyle Heights [east of Downtown Los Angeles in the City of Los Angeles] and saw his father wake up every morning at 2 a.m. to buy produce and resell it to local restaurants. And that he picked up his father’s strong work ethic to work his way through law school, and when the big firms did not hire Jews at the time, started a thriving practice to help everyday people get legal assistance.

... Donald changed his last name from Tokowitz to Sterling to give himself an aura of success. The name Tokowitz, apparently, sounded too Jewish.

Wikipedia reports he, "was born in 1934 in Chicago, Illinois. He and his family moved to the Boyle Heights area of Los Angeles when he was two years old. His parents, Susan and Mickey, were Jewish immigrants."

Billionaire real estate developer Sterling owned the Los Angeles Clippers basketball team but was banned for life by the NBA for ractist remarks in April 2014.