Ad Genius Lee Tae-baek (Korean: 광고천재 이태백; Hanja: 廣告天才 李太白; RR: Gwanggocheonjae Itaebaek; MR: Kwanggoch'ŏnjae It'aebaek) is a 2013 South Korean television series starring Jin Goo, Park Ha-sun, Jo Hyun-jae and Han Chae-young. Set in the cutthroat field of advertising where creativity and competition coexist, the drama is the success story of underdog Lee Tae-baek who fights his way to becoming the best ad man in the business. It aired on KBS2 from February 4 to March 26, 2013, on Mondays and Tuesdays at 21:55 (KST) for 16 episodes.

The protagonist is loosely based on internationally-renowned advertising designer and social activist Jeseok Yi (a.k.a. Jeski), who wrote the 2010 book Ad Genius Lee Je-seok.

The drama reunites Han Chae-young and Jo Hyun-jae who previously worked together in the 2005 TV series Only You.