Eternal can refer to:

• The British R&B group Eternal
• Eternals, the Marvel Comics characters created by Jack Kirby
• The eternity puzzle
• The concept of eternity
• The philosophical notion of the incorporeal, or immaterial realm.
• Eternally Missed a B-side by the band Muse.
• The support ship Eternal, a fictional warship found in the animes Gundam Seed and Gundam Seed Destiny.