The Beverly Hills, 90210 franchise comprises the ongoing timeline and shared characters that link the American television series Beverly Hills, 90210 (1990); Melrose Place (1992); Models Inc. (1994); 90210 (2008); Melrose Place (2009); and the 2019 revival BH90210, which takes place outside of the franchise continuity.

Kelly Marlene Taylor, portrayed by Jennie Garth, is the lead female character of Beverly Hills, 90210 for the majority of the show's duration. Initially presented as a "spoiled teen vixen", the role was gradually expanded by producers. Subsequently, Kelly became instrumental in launching the first spin-off, was written with a more compassionate demeanor, overcame several perils and personal challenges, and attracted many romantic suitors and triangles. Appearing for the entirety of the series' run, the character is noted for her development from youth to adulthood.