What was the name of the Island's protector at the end of the series?

The Island’s protector at the end of Lost is Hugo Reyes, better known as Hurley. In the series finale, Jack Shephard restores the Island’s light after defeating the Man in Black, but the effort fatally wounds him. Before returning to the Heart of the Island, Jack passes the protector’s responsibility to Hurley.

Hurley initially seems surprised by the appointment because he has usually been the group’s compassionate, humorous outsider rather than its formal leader. However, Jacob had already identified him as a candidate, and Hurley’s loyalty and concern for other people make him a fitting successor. The finale shows him accepting the role while Ben Linus agrees to serve as his adviser.

A common mix-up is choosing Jack, Jacob, or Ben. Jacob was the protector for many years, Jack briefly held the role, and Ben was Hurley’s trusted adviser—not the protector. Hurley’s tenure continues beyond the finale, with additional story material indicating that he tries to protect the Island differently from Jacob.