Lee Si-yeon (이시연) is a South Korean actress. Prior to her sex reassignment surgery in 2007, she was sometimes credited under her male birth name of Lee Dae-hak (이대학).

| Title | ||||||
|---|---|---|---|---|---|---|
My Boss, My Hero | Heo Ri-su | 6.2 | 2001-12-14 | 1.6007 | ||
Sex Is Zero 2 | Dae-hak | 5.6 | 2007-12-12 | 2.2998 | ||
The Devil's Game | 5.7 | 2008-01-31 | 0.7578 | |||
Sex Is Zero | Lee Dae-hak | 6.168 | 2002-12-12 | 4.275 | ||
Nan yeojaga dwaesseo | 0 | 2010-04-14 | 0.0913 | |||
X-Man | Self | 7.2 | 2003-11-08 | 31.1582 |