10 Adult Actors Playing Teenagers on TV

Crystal is best known for portraying the character of 17 year old Allison Argent in the hit television series named Teen Wolf. Crystal was born in 1985, and was 26 when she started portraying the character of Allison. Allison appeared for 3 seasons of the show, and Crystal was 29 when she acted for the 3rd season of Teen Wolf.

Jason shot to popularity as Jackson Stewart, the elder brother of Miley Stewart in the musical comedy series, Hanna Montana. Jason, born in 1977, was 29 years old when he started portraying the role of the 16 year old goofy teenager.

Cory played the beloved teenaged school sports hero and musician, Finn Hudson of about 19 years, in the television series Glee. Born in 1982, Cory was a 29 year old when he started playing the role of Finn in the first season, back in 2009.

Tammin portrays the character of Jenna Marshall, a teenage girl of about 17, in Pretty Little Liars. Born in 1983, Tammin is actually 32 years old. She is married, and has a baby, too. She was almost 27 years old when her character was introduced in the first season in 2010.

Mark is popularly known as the teenaged school jock and musician, Puck, or Noah Puckerman, in the musical comedy-drama television series, Glee. Glee is a coming of age story where Puck is currently about 15 years old,When he joined the Glee cast for the pilot episode in 2009, he was almost 27.

Harry is most popular as Mike Chan from Glee. Mike is approximately 19 years old, and Harry, born in 1982,His first appearance in Glee was in the very first season in 2009 as the high school student, when Harry himself was 27 years old.

Matt is Born in 1983, Matt is now 31, and is portraying the character of Roman, an alien boy of about 16 years, in the science fiction romantic drama television series, Star-Crossed, which released in 2014.

Paul plays the role of a 17 year old as Stefan Salvatore, a vampire, in The Vampire Diaries.was born in the year 1982,When the series started in 2009, Paul was 27.

Trevor in 90210, the fourth series of the Beverly Hills franchise, Trevor Donovan has played the role of the 19-year old boy,When he started playing the role when he was a few weeks away from turning 30.

Bianca has portrayed the role of Maya St. Germaine in the teen drama mystery-thriller. Maya was seen in the first three seasons, and the character met her death at the age of about 17. Bianca, born in 1979,She was 31 when she joined the cast.