Rika Adachi (足立 梨花, Adachi Rika, born October 16, 1992) is a Japanese actress. She was born in Nagasaki Prefecture, and raised in Mie Prefecture. She has appeared in several films, including Say "I love you" (2014) and Ghost Theater (2015), and has played leading roles in the TV Drama Kinkyori Renai: Season Zero (2014) and Yōkoso, Wagaya e (2015).