Olivia Tjandramulia (born 11 May 1997) is an Indonesian-born Australian former tennis player.
Tjandramulia reached a career-high singles ranking of world No. 350 on 11 June 2018. On 12 June 2023, she peaked at No. 100 in the WTA doubles rankings.
On the ITF Junior Circuit, she achieved a career-high ranking of 39, on 31 August 2015. She was an Australian under-18 girls champion.
Tjandramulia was born in Jakarta, Indonesia but grew up in Rockhampton, Australia.
She made her WTA Tour debut at the 2014 Hobart International, in singles and in doubles, partnering Kimberly Birrell.
She made her WTA 1000 debut in doubles at the 2023 Guadalajara Open, partnering Anna Rogers as an alternate pair.