Can i play gta v missions while in gta online?

Grand Theft Auto Online is a distinct online multiplayer experience that was released alongside Grand Theft Auto V. According to the Wikipedia entry, the game allows up to 30 players to roam the open world of San Andreas and participate in cooperative or competitive modes. The entry does not mention the ability to play the single‑player campaign missions of Grand Theft Auto V inside the online environment. Therefore, based on the available evidence, there is no confirmation that GTA V missions are playable while in GTA Online.