Chelsie Monica Ignesias Sihite (born 2 November 1995) is an Indonesian chess player and Twitch streamer.

She received the FIDE title of Woman International Master (WIM) in 2011 and has also represented Indonesia in five chess olympiads (Khanty-Mansiysk 2010, Istanbul 2012, Tromsø 2014, Baku 2016, Batumi 2018).

In June 2011, she has earned a Woman International Master title during the 12th ASEAN+ Age Group Chess Championship in Tarakan.

She scored 8 points (+7 =2 -1), the third-best individual performance on board two, behind Betul Cemre Yildiz and Irina Krush.

Indonesian National Team finished sixth during the tournament stage and took second place in the knockout phase, losing only to India in the final.