A birthday party is a party to celebrate the anniversary of someone's birth.

Birthday Party or The Birthday Party may also refer to:

• The Birthday Party (1931 film), a Mickey Mouse cartoon
• The Birthday Party (play), a 1958 play by Harold Pinter
  • The Birthday Party (1968 film), a 1968 film adaptation
• "The Birthday Party" (My Name Is Earl), an episode of My Name Is Earl
• "The Birthday Party" (Dynasty 1981), a 1981 episode of Dynasty
• "The Birthday Party" (Dynasty 2017), a 2021 episode of the Dynasty reboot series
• "The Birthday Party", a 2015 episode of Blood & Oil
• King Cole's Birthday Party or Birthday Party, a 1947-49 American TV series

• The Birthday Party (band), a 1977–1983 Australian post-punk band
• The Birthday Party (The Birthday Party album), 1980
• The Birthday Party (The Idle Race album), 1968
• Birthday Party, an album by Dave Pegg, 1998
• The Birthday Party (video), a 1985 concert video by Motörhead
• "The Birthday Party" (song), by the 1975, 2020
• "Birthday Party", a song by the Pixies Three, 1963

• The Birthday Party (novel), a 2007 novel by Panos Karnezis
• Birthday Party, the political party that was formed as part of Kanye West's 2020 presidential campaign

• Birthday (disambiguation)
• Party (disambiguation)