Rock Star or Rockstar may refer to:

• Rockstar (Nickelback Song): a song about being a Rockstar, and how to get there.
• Rock Star (film), a 2001 film starring Mark Wahlberg.
• Rock Star (TV series), a reality television program about the selection of a new lead vocalist for a different band each season.
• INXS, a reality television program about the selection of a new lead vocalist for the band INXS.
• Supernova, a reality television program about the selection of a lead vocalist for the band Supernova.
• A member of a Rock and Roll style band, or a solo artist in the genre.
• "Rock Star," the second single from In Search of... (album), a 2002 album by rap group N.E.R.D
• Project Rockstar, an online game set in the music industry.
• Rockstar Games, a games developer most notable for the Grand Theft Auto series, and its subsidiaries.
• Rockstar (drink), a brand of energy drink.
• Rockstar (Filipino band), a Filipino band famous for the song "Parting Time"
• Rockstar (One Piece): a fictional character from the anime about pirates, One Piece.
• Rockstar is also a single from D12 group member Bizarre