List of Famous people who are 40

Dawen Wang, known as Dawen, is a Taiwanese-American singer and songwriter. He first gained prominence when he won Kollaboration Acoustic 4. Dawen's first single "Wake Up", deals with Asian American stereotypes and prejudice towards minorities, and is especially popular among high school and college students. Known for his socio-politically conscious music, Dawen's material is a staple of Asian American Studies departments all over universities across the US, frequently performing and speaking at various panels and conferences.

Ronald Raldes Balcázar is a former Bolivian football defender. He is the first Bolivian player in history to reach 100 international appearances.

Yūsei Matsui is a Japanese manga artist. He was an assistant of Yoshio Sawai, the manga artist of Bobobo-bo Bo-bobo. Two of his manga Neuro: Supernatural Detective and Assassination Classroom were serialized in Weekly Shōnen Jump. Both were adapted into anime television series and Assassination Classroom was adapted into two live action films as well. His favorite manga series include Bobobo-bo Bo-bobo, JoJo's Bizarre Adventure, and Ultimate Muscle. In episode 25 of the Neuro anime, he has a cameo voice as a manga artist.

Mateusz Damięcki is a Polish actor. He has appeared in more than 30 films and television shows since 1993.

Cristian Zaccardo is an Italian former footballer who played as a defender. He mainly played as a centre back, although he was also capable of playing as a full-back or in midfield. He began his club career with Italian club Bologna in 2000, and remained with the club until 2004, aside from a loan spell with Spezia. He subsequently moved to Palermo, where he came to prominence during his four seasons at the club. In 2008, he moved to German club VfL Wolfsburg for a season, where he won the 2008–09 Bundesliga title. He returned to Italy the following season, joining Parma, and in 2013 he moved to Milan, before joining Carpi in 2015; he spent the 2016–17 season on loan with Vicenza in Serie B. In October 2017, he joined Maltese Premier League side Ħamrun Spartans. In January 2019, he signed with San Marinese club Tre Fiori, where he won the Coppa Titano, before announcing his retirement in July. At international level, he represented the Italy national football team on 17 occasions between 2004 and 2007, scoring one goal; he was a member of the Italian side that won the 2006 FIFA World Cup.

Serdar Gurbangulyýewiç Berdimuhamedow is a Turkmen politician and deputy chairman of government and the only son of the country's president, Gurbanguly Berdimuhamedow. He has widely been considered to be the apparent successor to his father. Little was known about him until recent times.

Johan Erik Calvin Elmander is a Swedish former professional footballer who played as a striker. Beginning his career with Holmalunds IF in the late 1990s, he went on to play professionally in the Netherlands, Sweden, Denmark, France, England, and Turkey before retiring at Örgryte IS in 2017. A full international between 2002 and 2015, he scored 20 goals in 85 games for the Sweden national team, and represented his country at the 2006 FIFA World Cup, UEFA Euro 2008 and UEFA Euro 2012.

Georg Späth is a German former ski jumper who competed from 1998 to 2013. He won a silver medal on the normal hill team event at the 2005 FIS Nordic World Ski Championships in Oberstdorf and finished fifth on the individual normal hill at those same championships.

Go Joo-won is a South Korean actor. He made his acting debut in the 2003 boxing series Punch, followed by a supporting role in the revenge-themed Resurrection (2005). In 2006, Go became a household name after appearing in the popular family dramas Bizarre Bunch and Famous Chil Princesses. He then played historical figures in two period dramas—King Seongjong of Joseon in The King and I (2007), and Ijinashi, the first king of Daegaya in Kim Su-ro, The Iron King (2010). Go also starred in the medical drama OB/GYN, and another family drama You're the Best, Lee Soon-shin (2013).

Lynda Aguirre Thomas, known professionally as Lynda, is a Mexican musician, singer, songwriter and activist. She achieved recognition in her native Mexico during the 1990s and early 2000s. She was signed to EMI Capitol Records and released four studio albums. Her last album, Polen, was released in 2001 and she retired shortly afterwards.