On Air (Korean: 온에어) is a 2008 South Korean television series, starring Kim Ha-neul, Park Yong-ha, Lee Beom-soo and Song Yoon-ah. The series is a behind-the-scenes look at a fictional television drama, revealing details about what normally goes on behind a TV drama production. It aired on SBS TV from March 5 to May 15, 2008 on Wednesdays and Thursdays at 21:55 for 21 episodes.

Kim Ha-neul is a South Korean actress. After starting her career as a model, she rose to fame by starring in the films Ditto (2000), My Tutor Friend (2003), Too Beautiful to Lie (2004), and My Girlfriend Is an Agent (2009). In 2011, Kim won Best Actress at the 48th Grand Bell Awards and the 32nd Blue Dragon Film Awards for her performance in the serial killer thriller Blind. Her television work includes Romance (2002), On Air (2008), A Gentleman's Dignity (2012), and 18 Again (2020).