George Costanza

George Costanza
Seinfeld character
First appearance	"The Seinfeld Chronicles" (1989)
Last appearance	"The Over-Cheer" (2014)
Created by	Jerry Seinfeld Larry David
Based on	Larry David
Portrayed by	Jason Alexander
In-universe information
Alias	Art Vandelay Donald O'Brien Biff Bodysuit Man T-Bone Koko Gammy
Gender	Male
Occupation	Assistant to the Traveling Secretary for the New York Yankees (seasons 6–8) Real estate agent (seasons 1–2) Representative for Kruger Industrial Smoothing (season 9) Screenwriter (season 4)
Family	Frank Costanza (father) Estelle Costanza (mother) Unnamed brother
Significant other	Susan Biddle Ross (fiancée, deceased)
Relatives	Shelly (cousin) Rhisa (cousin)
Religion	Catholic (by upbringing) Latvian Orthodox Church

George Louis Costanza is a fictional character in the American television sitcom Seinfeld (1989–1998), played by Jason Alexander. He is a short, stocky, balding man who struggles with numerous insecurities, often dooming his romantic relationships through his own fear of being dumped. He is also relatively lazy; during periods of unemployment he actively avoids getting a job, and while employed he often finds ingenious ways to conceal idleness from his bosses. He is friends with Jerry Seinfeld, Cosmo Kramer, and Elaine Benes. George and Jerry were junior high school friends (although in "The Betrayal", Season 9, Episode 8, George says the two have been friends since fourth grade) and remained friends afterward.^[1][2] George appears in every episode except "The Pen" (third season).

The character was based on Seinfeld co-creator Larry David but is surnamed after Jerry Seinfeld's real-life New York friend, Michael Costanza. Alexander reprised his role in an episode of Comedians in Cars Getting Coffee, reuniting with Jerry Seinfeld and Wayne Knight (also reprising their roles as Jerry and Newman, respectively).