Stan Kirsch was an American actor and acting coach from New York City. He appeared in television commercials as a child. His most notable acting role was that of young immortal Richie Ryan in the fantasy television series "Highlander: The Series" (1992-1998). His character was introduced as a student and surrogate son for the protagonist Duncan MacLeod (played by Adrian Paul). Richie remained as one of the series' main characters until his death in the finale of the 5th season. Kirsch also depicted an alternate-reality version of Richie in the two-part finale of the 6th season.

In 1972, he appeared in television commercials for Campbell's soup. He would continue to appear in commercials during his early career. He decided to pursue an acting career. His earliest credited role in television was a guest star role in the short-lived western series "Riders in the Sky" (1991). In 1992, Kirsch made a few appearances in the soap opera "General Hospital" (1992-).

Kirsch had his first recurring role as Richie Ryan "Highlander: The Series" . Richie was initially depicted as an orphaned thief, who became a surrogate son for the centuries-old immortal Duncan MacLeod. He was a wisecracking teenager, who felt bewildered when surrounded by immortals with lifelong obsessions and hidden agendas. By the 2nd season, Richie realized that he was also immortal. He started becoming a more cynical character, with lethal conflicts of his own. He also displayed a ruthless streak. The screenwriters eventually decided to write him out. In his final regular episode, the demon Ahriman manipulates Duncan into killing Richie. The event shatters Duncan's self-confidence. Richie's episode turned out to be one the most controversial episodes in the series, as Richie was a fan-favorite character.

In 1995, Kirsch had a memorable guest-star role in the sitcom "Friends" (1994-2004). He played Ethan, the new boyfriend of regular character Monica Geller (played by Courteney Cox). Monica has been told that Ethan is a college student, and she is initially thrilled to date a younger man. Until Ethan confesses that he is a high school student and still underage. Monica breaks up with him in disgust.

Kirsch played two different roles in the legal drama television series "JAG" (1995-2005). He first appeared as a young ensign in 1996, and then as a lieutenant in 2001. He appeared frequently as a guest in other series of this period, such as "Love Boat: The Next Wave" and "Family Law".

Kirsch had a rare role in a theatrical film, when playing deputy sheriff Stuart Dempsey in the horror film "Shallow Ground" (2004). In the film, local police officers arrest an adolescent boy who is covered in blood. The boy becomes the main suspects in several unsolved disappearances in the area. The boy somehow has access to the memories of the dead, and Stuart and several other characters are revealed to have skeletons in their closet. The film debuted at the "Dead by Dawn Edinburgh Horror Film Festival".

Kirsch's acting roles became fewer in the late 2000s, but he had a change in his career path. In 2008, he founded the acting studio "Stan Kirsch Studios.". He primarily worked as an acting coach for the rest of his life. He reportedly had many students, and he was regarded as very good at his job.

Kirsch committed suicide by hanging on January 11, 2020, at the age of 51. The causes for his suicide were unknown. He was survived by his wife and business partner Kristyn Green. The official "Highlander" Facebook page posted an obituary for him, and the press reported grieving reactions by Kirsch's former students. Despite a rather brief career, Kirsch is fondly remembered for his acting roles.