Koh Jia Ler (; born 11 November 2000) is a Singaporean actor who is best known for starring in the Anthony Chen films Ilo Ilo, Wet Season and We Are All Strangers.
Koh starred in the 2013 drama film Ilo Ilo. For his performance in the film, he was nominated for the Golden Horse Award for Best New Performer. He had a supporting role in Life - Fear Not. He starred in the 2019 drama film Wet Season. For his performance in the film, he was nominated for the Golden Horse Award for Best Supporting Actor. He starred in We Are All Strangers, the final installment of Anthony Chen's Growing Up trilogy.