List of Famous people who are 66

Julie Ann Brown is an American retired distance runner. She won the IAAF World Cross Country Championship in 1975 and represented the United States in the 1984 Summer Olympics in the women's marathon, placing 36th.

Andrés Carrascosa Coso is a Spanish prelate of the Catholic Church who works in the diplomatic service of the Holy See. He has been Apostolic Nuncio to Ecuador since 2017.

James R. "Duke" Aiona Jr. is an American politician and jurist who served as the tenth lieutenant governor of Hawaii from 2002 to 2010. A Republican, he also served both as an attorney and a judge for the state prior to becoming lieutenant governor.

Rogelio Enrique San Francisco Cobo, better known as Quique San Francisco, was a Spanish actor and comedian. He was a noted figure in the so-called cine quinqui scene.

Sigurður Sigurjónsson, commonly referred to as Siggi Sigurjóns, is an Icelandic actor, comedian and screenwriter, best known as a member of the comedy group Spaugstofan. He has starred in a number of films and television series since the late 1970s, as well as acting in the National Theatre of Iceland. He is famous for his recurring characters in the Spaugstofan television series, including Ragnar Reykás and Kristján Ólafsson. Sigurður has starred in many seasons of the annual television special Áramótaskaupið. He is also one of the leading Icelandic voice actors and has dubbed numerous animated features. In March 2015, Sigurjóns appeared in the music video for "Crystals," the lead single from the Of Monsters and Men album "Beneath the Skin."

(Char-)Lotta Hedström, earlier Nilsson Hedström, is a Swedish Green Party politician. She was a member of the Riksdag 2002–06.

Neil Meron is an American film producer known for producing the 2002 film Chicago and the 2007 film Hairspray. With partner Craig Zadan he ran the production company Storyline Entertainment until Zadan's death in 2018. Meron continues to run the company.