Dinah Laurel Lance is a fictional character in The CW's Arrowverse franchise based on the DC Comics character of the same name, created by writer-artist team of Robert Kanigher and Carmine Infantino, and adapted by Greg Berlanti, Marc Guggenheim and Andrew Kreisberg for Arrow in 2012. Katie Cassidy portrays the several multiverse versions of the character within the Arrowverse, all of whom are mostly referred to by their middle name, "Laurel", unlike the comics.

The first version of Laurel is introduced in the pilot episode of Arrow as a legal aid attorney and Oliver Queen's ex-girlfriend, who later becomes a vigilante and takes up the mantle of Black Canary in subsequent seasons of Arrow until her death in season four. The character also appears in spin-off shows The Flash and Legends of Tomorrow as well web series Vixen, which are all set in the same shared fictional universe.

In 2016, the penultimate episode of The Flash season two introduces an antagonist doppelgänger of Laurel Lance from the parallel universe Earth-2, who is known as Black Siren. The character subsequently recurs in Arrow season five and becomes one of the main characters from season six onward. This version of Laurel is gradually redeemed in the following seasons of Arrow and eventually assumes the heroic 'Black Canary' moniker, like her late Earth-1 counterpart.

Following the events of the sixth annual Arrowverse crossover "Crisis on Infinite Earths", Earth-2 Laurel is revived in the rebooted universe called Earth-Prime. The penultimate episode of Arrow's final season served as a pilot for a potential spin-off series Green Arrow and the Canaries set in 2040 in the new timeline, co-starring Cassidy as the character. However, the series was not picked up.

Dinah Laurel Lance is first introduced in the pilot episode of Arrow as a legal-aid attorney working for a legal assistance group called CNRI (City Necessary Resources Initiative) in Starling City. Her father Quentin Lance is a detective and her younger sister Sara Lance and ex-boyfriend Oliver Queen are both presumed dead, while having a secret fling during the sinking of Queen's Gambit five years ago.

Over season one's course, Laurel pursues a relationship with Tommy Merlyn, and often works with "The Hood", unaware that the vigilante is actually Oliver who has returned. Laurel initially blames Oliver for Sara's death but after her breakup with Tommy, she briefly resumes her relationship with Oliver. Tommy's death during the events of 'The Undertaking' eventually causes Oliver and Laurel to part ways.

In season two, Laurel becomes an Assistant District Attorney, but also struggles with Tommy's death, leading her to fight her own battles with alcoholism and use of prescription drugs. She learns that her sister Sara is alive. She also learns that Oliver is the vigilante known as "The Arrow", and her sister is also a vigilante, whom she eventually names "The Canary".

In season three, Laurel witnesses Sara's murder and resolves to become a vigilante to find her sister's killer and to help people as Sara did. This leads her to begin combat training with Ted Grant, and later Nyssa al Ghul. Initially impersonating "The Canary", Laurel eventually assumes her own mantle as the "Black Canary" and joins Oliver's crusade. As Black Canary, she uses a side-handle baton as her trademark weapon, and later uses an updated version of her sister's sonic "Canary Cry" device designed by Cisco Ramon.