List of Famous people who are 42

Lada Kozlíková is a Czech Republic road and track racing cyclist. She won a gold medal at the 2002 UCI Track Cycling World Championships in the scratch race. She competed at the 2000, 2004 and 2008 Summer Olympics.

Christopher Jacot is a Canadian film, television and voice actor.

Gavin Wood is a British computer programmer, co-founder of Ethereum and creator of Polkadot. He invented Solidity and wrote the Yellow Paper specifying the Ethereum Virtual Machine. Wood served as the Ethereum Foundation's first chief technology officer. After leaving Ethereum in 2016, he co-founded Parity Technologies, which develops core infrastructure for Ethereum, Bitcoin, Zcash and Polkadot.

Kaori Mori is a former Japanese badminton player. She was the women's singles national champion in 2001 and 2003. Mori won the bronze medal at the 2004 Asian Championships and also the silver medals in 2005 and 2006. She played badminton at the 2004 Summer Olympics, defeating Anu Weckström of Finland in the first round but losing to Zhou Mi of China in the round of 16. She also helps the Japanese women's team to win bronze at the 2004 Uber Cup in Jakarta, Indonesia.

Joanne Valda "Jo" O'Meara is an English singer and songwriter. She was member of pop group S Club 7 between 1999 and 2003. O'Meara was a member of spin-off group S Club 3 between 2008 and 2020.

Martina Clavadetscher. is a Swiss playwright and book author. She was the recipient of several awards amongst them also the Swiss Book Prize of 2021.