David Katz may refer to: David Katz (author), American author and music journalist David Katz (conductor) (1924–1987), American conductor David Katz (psychologist) (1884–1953), German-Swedish psychologist, gestalt perception David A. Katz (1933–2016), U.S. federal judge David Bar Katz, American screenwriter, playwright, author and director David L. Katz (born 1963), Yale University nutritionist David S. Katz (born 1953), Israeli historian Dave Katz (born 1961), producer / songwriter David Katz, perpetrator of the 2018 Jacksonville Landing shooting