Now or Never may refer to:

• Now or Never; Are We to Live or Perish Forever?, a pamphlet by Choudhary Rahmat Ali
• Now or Never!, an anarchist newspaper published in Norwich, United Kingdom
• Now or Never (album), an album by Nick Carter
• Now or Never (Young Chris album), an album by rapper Young Chris
• Now or Never (song), the 2007 debut single of German singer Mark Medlock
• Now Or Never (High School Musical song), the first single from the High School Musical 3: Senior Year soundtrack.

• For the Elvis song "It's Now or Never" see 'O Sole Mio#English versions

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