content: '''Olenna Tyrell''' is a fictional character in the ''A Song of Ice and Fire'' series of high fantasy novels by American author George R. R. Martin, and its television adaptation, ''Game of Thrones''.
  Olenna is first mentioned in ''A Game of Thrones'' (1996) and appears in ''A Storm of Swords'' (2000) and ''A Feast for Crows'' (2005). She is the matriarch of the powerful House Tyrell, the largest and second wealthiest of the eight Great Houses of Westeros. Olenna is characterized by her cunning, ambition, and sharp wit (the latter of which being the foundation for her title, '''the Queen of Thorns''', alongside the Tyrell sigil of a rose). Although her family is allied with the Lannisters in King's Landing, she often finds her own machinations at odds with theirs, especially those of Tywin Lannister. She, along with Petyr Baelish, is responsible for the death of King Joffrey Baratheon during his wedding to her granddaughter and protégé, Margaery.
  Olenna is portrayed by veteran English actress Diana Rigg in the HBO television adaptation, who has received significant critical praise for her portrayal. Rigg has received Emmy Award nominations for Outstanding Guest Actress in a Drama Series for her performances in 2013, 2014, 2015, and 2018.