List of Famous people who are 40

Helle Nielsen is a Danish badminton player. In 1999, she won a silver and two bronzes at the European Junior Badminton Championships in Glasgow, Scotland in the girls doubles, mixed doubles and mixed team respectively. In 2008, she won the bronze medal at the European Championships in mixed doubles with Carsten Mogensen.

Jiang Yanmei is a Singaporean badminton player. She competed at the 2004 and 2008 Summer Olympics; 2002 and 2006 Commonwealth Games; and also 2006 Asian Games.

Eri Sendai is a Japanese actress and voice actress from Japan. Her major roles in anime include Kurumi Mimino/Milky Rose in Yes! Precure 5, Rei Saotome in Yu-Gi-Oh! GX, Kōrin Sa in The Story of Saiunkoku, Yukari Morita in Rocket Girls, Yuuhi Shimbara in Neo Ranga and Arika in Medabots.

Laëtitia Françoise Andrée "Toto" Tonazzi is a former French footballer who played for Montpellier of the Division 1 Féminine. She played as a striker and was a member of the France women's national football team. She is known for her impressive strike rate for her club and country. During the 2007–08 season, Tonazzi scored a career-high 27 goals, which included scoring five on the final match day against the women's section of Évreux FC, formerly Évreux AC.