List of Famous people who are 30

Kim Hee-jin is a South Korean female professional volleyball player. She was a member of the Republic of Korea women's national volleyball team at the 2012 Summer Olympics and 2016 Summer Olympics. The team finished at fourth place in 2012 and fifth in 2016.

Rodjana Chuthabunditkul is a Thai badminton player. She won the 2009 BWF World Junior Championships in mixed doubles, playing with Maneepong Jongjit.

Matilda Petersen is a Swedish female badminton player.

Duane Alexander Johnson is an American professional basketball player for Maccabi Ma'ale Adumim of the Israeli National League. He played college basketball for East Stroudsburg, where he was part of four straight PSAC Final Four teams and three NCAA Division II Tournament teams. He has since played professionally in Australia, Ireland and Luxembourg.