Lee Si An (이시안) is a South Korean trainee under Dreamcatcher Company. Lee Si An originally appeared as a contestant on the survival show Idol School. She ranked 16th place in the finale, therefore being unable to debut with fromis_9. In June 2018, she became a contestant on the survival show Produce 48. She was eliminated in episode 11 after ranking 30th place. She trained for 9 months before going on Produce 48. She’s a former Stone Music Entertainment trainee.
She was supposed to debut the pre-debut Happyface Girls under Happyface Entertainment in 2021, but all the girls left the agency and so their debut was cancelled.