Eduard Heine (16 March 1821, Berlin – October 1881, Halle) was a German mathematician in Prussia. His name is given to several mathematical concepts that he was instrumental in developing:

• Heine–Borel theorem
• Heine–Cantor theorem
• Heine–Stieltjes polynomials
• Heine definition of continuity
• Heine functions
• Heine's identity
• Mehler–Heine formula

• The Matthew Effect
• The Matthew Shepard Story
• The Matthew's Range
• The Matys Brothers
• The Mauritius Command
• The Mavericks
• The Mavis Bramston Show
• The Maximos
• The maximum leader
• The Max Levine Ensemble
• The Max Talking Headroom Show
• The Maxx
• The Maybourne Hotel Group
• The May Department Stores Company
• The Mayflower
• The Mayflower Society
• The May Irwin Kiss
• The Mayor of Casterbridge
• The Mayor (The PowerPuff Girls)
• The Maysles Brothers
• The Maytals
• The Maze (1953 film)
• The maze game
• The Maze (painting)
• The Maze Prison