Special Guest Star (also known as a Special Appearance) is a credit used on television shows to denote a guest star of particular importance, such as a returning cast member or a celebrity. On Lost, the credit was used several times in the second and third seasons for returning main cast members. However, the credit was not used in "Meet Kevin Johnson" for the return of Cynthia Watros, and, following its final use in "The Lie", returning cast members were credited simply as guest stars.
Episodes featuring Special Guest Stars
- "Abandoned" - Ian Somerhalder (Boone)
- "Collision" - Maggie Grace (Shannon)
- "Further Instructions" - Ian Somerhalder (Boone)
- "Exposé" - Maggie Grace (Shannon) and Ian Somerhalder (Boone)
- "Through the Looking Glass" - Malcolm David Kelley (Walt)
- "The Lie" - Michelle Rodriguez (Ana Lucia)
- Although the credit was used in six different episodes, only four actors have been credited as Special Guest Stars.
- Ian Somerhalder has the most Special Guest Star credits, with three.
- "Exposé" is the only episode of the series to feature more than one Special Guest Star.