Emissary may refer to:
- Ambassador
- Apostle (disambiguation)
- Diplomat
- The Subspace Emissary, the single-player Adventure Mode in the video game Super Smash Bros. Brawl
- Emissaries (album), an album by black metal group Melechesh
- Emissary (comics), an Image comic by Jim Valentino
- Emissary (hydraulics), channel by which an outlet is formed to carry off any stagnant body of water
- Emissary veins, valveless veins which normally drain the intracranial venous sinuses to veins on the outside of the skull
- Emissary (Internet Software), an early Internet Suite
- The Emissary (TV series), 1982 Hong Kong TV series
In Star Trek:
- Benjamin Sisko, called the Emissary by the Bajorans
- "Emissary" (Star Trek: Deep Space Nine), the pilot episode of Star Trek: Deep Space Nine
- "The Emissary" (Star Trek: The Next Generation), a second-season episode of Star Trek: The Next Generation