Ha Eun-Joo (born September 25, 1983, in Seoul, South Korea) is a South Korean professional basketball player. She is 6'8" and plays the center position. She is the older sister of the former NBA player, Ha Seung-Jin.
She was signed by the Los Angeles Sparks of the WNBA on February 6, 2006. On May 19, 2006, Ha Eun-Joo was waived by the Sparks for failing to arrive in Los Angeles due to a conflicting contract with Chanson Cosmetics of the JBA.