The Vampire Diaries has eight seasons and 171 episodes. Seasons 1, 2, 3, 5, 6 and 7 have 22 episodes each, season 4 has 23, and the final season 8 has 16.
The series aired on The CW from 10 September 2009 to 10 March 2017. The first seven seasons started in September or October and ran until May; the shorter final season ended in March.
Every episode has its own page on this site with its title and original air date, grouped by season.