Ainsley Seiger (born September 4, 1998) is an actress who appeared as a series regular on Law & Order: Organized Crime as Jet Slootmaekers.

Seiger began their acting career on stage with PlayMakers Summer Youth Conservatory and received a Triangle Rising Star award for best actress (2016) for their portrayal of Wednesday Addams, has performed as Wendla in a UNC production of Spring Awakening and has appeared in a number of short films, including American Waste. They also played the role of Taylor Prout in the 2026 independent film, Party USA