Milton "Bill" Finger (February 8, 1914–c. January 18, 1974) was an American comic book writer who was the co-creator (with Bob Kane) of the DC Comics character Batman.

Despite making major (sometimes, signature) contributions as an innovative writer, visionary mythos/world builder, and illustration architect, Finger (like other creators of his era) was often relegated to ghostwriter status on many comics—including those featuring Batman and the original Green Lantern, Alan Scott. While Kane privately admitted in a 1980s audio interview with his autobiographer that Finger was responsible for "50–75% of all the creativity in Batman," he publicly denied Finger had been anything more than a subcontractor executing Kane's ideas for decades. As a result, Finger died in obscurity and poverty while the Batman brand, and Kane, amassed international fame and wealth.