Brian To'o (born 18 August 1998) is an Australian and Samoa international rugby league footballer who plays as a winger for the Penrith Panthers in the NRL.

[3][4] To’o grew up in the Sydney suburb of Mount Druitt and was educated at Rooty Hill High School.

[6] To'o scored his first try in the top grade in Round 14 of the 2019 NRL season against South Sydney at ANZ Stadium in a 19–18 victory.

[7] In Round 18 against St George Illawarra, To'o scored two tries as Penrith won the match 40–18 at Panthers Stadium.

[8] To'o made a total of 15 appearances for Penrith in the 2019 NRL season as the club finished tenth on the table and missed out on the finals for the first time since 2015.

[9] In round 8 of the 2020 NRL season, To'o was taken from the field during Penrith's 19–12 victory over Wests Tigers at Bankwest Stadium.

[27] To'o played in every game for Samoa at the 2021 Rugby League World Cup including the final against Australia.

Following the match, To'o took a swipe at the referee involved in the game and Wigan player Jake Wardle saying "You can’t change much.

[43] To'o played a total of 24 matches for Penrith in the 2024 NRL season including their 14-6 grand final victory over Melbourne.

[44] Individual Club Representative To’o proposed to Moesha Crichton-Ropati at Suncorp Stadium amid the immediate post-match celebrations by the Penrith team of their grand final victory on 3 October 2021.

[46] To'o, who would play in his fifth consecutive grand final (2020-2024) on Sunday 6 October, is known for his questionably calorific breakfast that has become his tradition since 2020.

Fox News reports that he enjoys two breakfast burgers, a bowl of chips with aioli and 6 cans of Coke Zero.