Martin Greenberg may refer to:

• Martin Greenberg (publisher) (1918–2013), American book publisher, founder of Gnome Press
• Martin Greenberg (poet) (1918–2021), American poet and translator of Goethe
• Martin H. Greenberg (1941–2011), American speculative fiction anthologist and writer
• Martin L. Greenberg (born 1932), American politician and jurist