List of Famous people who are 40

Claudemir Jerônimo Barreto, known as Cacau, is a former professional footballer who played as a striker. Born in Brazil, he represented Germany at international level.

Katrina Robinson is an American politician who serves in the Tennessee Senate from the 33rd district as a member of the Democratic Party. In 2020, she was indicted on 48 charges relating to the embezzlement of $600,000 from federal grants to her nursing school.

Gang Dong-won is a South Korean actor.

Germán Gustavo Denis is an Argentine football striker who plays for Italian club Reggina.

Robert is an Indian Choreographer who has worked in across India's several regional film industries. He has also appeared as an actor, often portraying villainous roles or by making cameo appearances in songs he has choreographed.

Edwin Laureano Rosa Vázquez Ortiz, known professionally as Ñengo Flow, is a Puerto Rican singer and songwriter. He was born in the Río Piedras district of San Juan, Puerto Rico and grew up in Bayamón where he started in the music business. At the age of 14, Ortiz first presented on stage in the neighborhood where he lived in a community movement.

Stefan Petzner is an Austrian politician. He was a member of the right-wing Alliance for the Future of Austria (Bündnis Zukunft Österreich, BZÖ). Petzner is a former reporter and a student of journalism. Petzner directed the election campaigns in 2006 and 2008. In 2008 Petzner was appointed secretary general of the BZÖ.

Óscar Andrés Rodríguez Quiñonez is a Paraguayan politician. Since December 2019 he has been the current Acting Mayor (intendant) of the City of Asuncion, the capital of Paraguay.

Hadson da Silva Nery, known as Hadson or Hadballa, is a Brazilian professional football manager of Santos de Macapá, reality-television personality and former professional footballer.

Oh Jin-Hyek is a South Korean archer. Oh first competed for the Korean national team in 1999, but did not win a major individual international tournament until he won the gold medal in the Men's individual event at the 2012 Summer Olympics, also becoming the first Korean male archer to win an Olympic individual Gold medal. With partners Im Dong-Hyun and Kim Bub-Min, he also finished in third place in the Men's team event. He was the world number one ranked archer from April 2013 to June 2014, winning the individual gold medal at the 2013 Archery World Cup Final and two individual silver medals at the 2011 and 2013 World Championships.