Al-Mayassa bint Hamad Al Thani

Sheikha Al-Mayassa bint Hamad bin Khalifa Al Thani (Arabic: المياسة بنت حمد بن خليفة آل ثاني; born 1983) is the sister of Qatar's ruling Emir Tamim bin Hamad Al Thani, and daughter of the country's former Emir Hamad bin Khalifa Al Thani and his second wife Sheikha Moza bint Nasser Al-Missned. Al-Mayassa was declared the most influential person in art on Art+Auction's top-10 list and ArtReview's Power 100, and prominently appears on the Time 100, and Forbes' The World's 100 Most Powerful Women. She was listed in the 'Top 100 most powerful Arabs' from 2014 to 2017 and 2021 by Gulf Business. Al-Mayassa serves as Chairperson of Qatar Museums, and it was reported by Bloomberg that her annual acquisition budget on behalf of the organization is estimated at $1 billion.

Al-Mayassa reportedly bought Paul Gauguin's When Will You Marry? in 2015 for $300 million, a record price for a painting. In March 2016, she opened the exhibition What About the Art? A New Exhibition curated by Chinese artist Cai Guo-Qiang at Al Riwaq Gallery. Qatar has bought Cezanne's The Card Players in 2012 for $250 million, as well as Mark Rothko's White Center (Yellow, Pink and Lavender on Rose) in 2007 for $70 million, a Damien Hirst pill cabinet for $20 million and works by Jeff Koons, Andy Warhol, Roy Lichtenstein and Francis Bacon. She has staged major exhibitions in Qatar with Takashi Murakami, Richard Serra, and Damien Hirst.