Lowell Ganz (born August 31, 1948 in New York City) is an American screenwriter, television writer, and television producer. He is the long-time writing partner of Babaloo Mandel. Ganz grew up in Queens, New York, attending Martin Van Buren High School in Queens Village. He dropped out of college and moved to Los Angeles, California to pursue a career writing for sitcoms, starting with The Odd Couple. From there, he moved on to writing for the TV series Happy Days and created two of its spin-off series, Laverne and Shirley and Joanie Loves Chachi.