- Name: Ko Ah Ra (Go Ah Ra)
- Profession: Actress and model
- Birthdate: 1990-Feb-11
- Birthplace: Jinju, South Gyeongsang, South Korea
- Height: 169cm
- Weight: 45kg
- Star sign: Aquarius
- Blood type: A
- Family: Younger brother
- Talent agency: SM Entertainment
- Could It Be Fruit Candy? (MBC, 2010)
- Heading to the Ground (MBC, 2009)
- Karei naru Spy (NTV, 2009) Cameo Ep3
- Who Are You? (MBC, 2008)
- Snow Flower (SBS, 2006)
- Sharp 2 (KBS2, 2005)
- Sharp 1 (KBS2, 2004)
- Papa (2012)
- Subaru (2009)
- The Blue Wolf: To the Ends of the Earth and Sea (2007) as Mistress Kulan
- Etude Cosmetics
- SK Ting (SK Telecom)
- Ottogi Noodle (with Kim Ki Bum and Jung Hwa Young)
- Doosan Biotech Cosmetics
- Cocktail Bar (Binggrae Co., LTD)
- Elite School Fashion
- Miero Fiber Health Drink (Hyundai Pharm Co., LTD)
Recognitions
- 43rd Baeksang Art Awards: Best New Actress Award for Snow Flower (2007)
- 2006 SBS Acting Award: Newcomer Award for Snow Flower
- KBS Television Academy Awards: Best Young Actress (Sharp 1, 2004)
- SM Entertainment 5th Anniversary Teen Model Contest: Winner (2003)
- Education: Songjeong Junior High School, Chungshin Christian Girls’ Academy (Songpa, Seoul, South Korea), Central University (Theater degree)
- Hobbies: Listening to music and playing the flute
- Languages: Korean and Japanese
- Religion: Christianity