Israel

• Masada (Hebrew: מצדה), a Judean fortress, the site of a famous siege and mass suicide.
• Masada (kibbutz) (Hebrew: מסדה), a kibbutz in Israel near the Sea of Galilee.
• Mas'ada (Hebrew: מסעדה), a Druze village in the Golan Heights.

Other

• Masada College, a Jewish primary and secondary school in St Ives, New South Wales, Australia.
• Masada (band), a jazz quartet fronted by avant-garde composer John Zorn, and a series of Zorn's musical projects based on compositions originally written for this quartet, including:
• Bar Kokhba
• Electric Masada
• Masada String Trio
• Masada (miniseries) (1981)
• Masada (album) by Alpha Blondy; also the title of a song on the album
• "Masada" is an alias used by Hip Hop artist Killah Priest, and an album by that name, View from Masada.
• Masada was a Starfleet officer mentioned in the Star Trek episode, "The Doomsday Machine"
• Masada is a superheroine in Youngblood.
• Masada (wrestler), a professional wrestler
• Bushmaster ACR, a rifle designed by Magpul. It is formerly called Magpul Masada.
• Masada, a piece of music by Ralph Hultgren