Title: Elena Gilbert
Content:  Elena Gilbert is a fictional character and protagonist from the novel series The Vampire Diaries. In the television series adaptation, set in the fictional town of Mystic Falls, she is portrayed by Nina Dobrev. In the books, Elena was blonde, popular, selfish and a "mean girl". However, the show's producers, Julie Plec and Kevin Williamson, felt that it wasn't the direction they wanted to go with their heroine in The Vampire Diaries television series. Instead, she became a nicer, relatable, and more of "the girl next door" type, until her life gets flipped upside down when she meets the Salvatore Brothers. In April 2015, Nina Dobrev announced that she would be departing the series after the sixth-season finale. 
Title: List of The Vampire Diaries characters
Content: Played by Nina Dobrev (Original) ; Starring seasons: 1–8 ; Voice only role season: 7 ; The Originals Episode: "Red Door" Elena Gilbert (based on Elena Gilbert from the novels) is the central character and the female lead of the series for the first six seasons. She is the biological daughter of John Gilbert and Isobel Flemming, and the adopted daughter of Grayson and Miranda Gilbert. She has a younger brother named Jeremy Gilbert. She has an adoptive aunt named Jenna Sommers who serves as Elena and Jeremy's legal guardian in the first two seasons of the series but was killed by Klaus Mikaelson. Elena Gilbert is a descendant and doppelgänger of Katherine Petrova.
Title: Elena Gilbert
Content:  On March 9, 2009, it was announced that Bulgarian-born Canadian actress Nina Dobrev, known for her portrayal of Mia Jones on Degrassi: The Next Generation, had joined the cast of The Vampire Diaries as Elena. She was the second cast member to be announced following Steven R. McQueen, who plays Elena's brother Jeremy Gilbert. Steve West Cinema Blend said the vampire brothers' battle over Elena will wreak havoc on the entire town.". Executive producer Kevin Williamson recalled Dobrev auditioning while having the flu, which he described as the "worst audition ever", and they "didn't even look at her a second time". Dobrev went back home to Canada, yet, still wanting the part, she submitted a videotape audition, which saw her cast as 
Title: The Vampire Diaries
Content: Nina Dobrev as Elena Gilbert (season 1–6; guest season 8), a young orphan who falls in love with vampire Stefan Salvatore and later his brother, Damon, creating a love triangle. When Stefan shuts his humanity off after being blackmailed by Klaus, Damon is given the opportunity to grow closer to Elena. This results in her being further drawn into the supernatural world and results in her struggling to survive supernatural events in the town. Dobrev also portrays Elena's doppelgänger, Katerina Petrova also known as Katherine Pierce. Dobrev sporadically appeared in subsequent seasons and played a significant role in the fifth season. Dobrev also 
Title: The Vampire Diaries (season 8)
Content:  On January 26, 2017, it was announced that Nina Dobrev would return as Elena Gilbert in the series finale. At the end of the episode, "It's Been a Hell of a Ride" on February 24, 2017, it was revealed that Dobrev would reprise her role of Katherine Pierce as well.
Title: The Vampire Diaries (season 3)
Content:  The series stars Nina Dobrev as Elena Gilbert and Katherine Pierce, Paul Wesley as Stefan Salvatore, Ian Somerhalder as Damon Salvatore, Steven R. McQueen as Jeremy Gilbert, Kat Graham as Bonnie Bennett, Candice Accola as Caroline Forbes, Zach Roerig as Matt Donovan, Michael Trevino as Tyler Lockwood, Matt Davis as Alaric Saltzman and Joseph Morgan as Klaus. 7th Heaven's David Gallagher was cast as werewolf Ray Sutton who has a run-in with Klaus in Tennessee. Australian actress, Claire Holt has been cast as Rebekah the sister of Klaus and Elijah, a beautiful vampire who had the pleasure of Stefan's company back in the early days when he was feasting on human blood. Sebastian Roché has 
Title: The Vampire Diaries (season 4)
Content: Nina Dobrev as Elena Gilbert / Katherine Pierce, aka. Katerina Petrova / Tatia Petrova / Amara Petrova ; Paul Wesley as Stefan Salvatore / Silas ; Ian Somerhalder as Damon Salvatore ; Steven R. McQueen as Jeremy Gilbert ; Kat Graham as Bonnie Bennett ; Zach Roerig as Matt Donovan ; Candice Accola as Caroline Forbes ; Michael Trevino as Tyler Lockwood ; Joseph Morgan as Klaus Mikaelson 
Title: List of The Vampire Diaries characters
Content: Played by Sara Canning ; Starring seasons: 1–2 ; Guest starring seasons: 3, 5 and 8 Jenna Sommers (loosely based on Judith Maxwell from the novels) was Elena and Jeremy Gilbert's aunt. She was the sister of their mother, Miranda Sommers-Gilbert. After her sister and brother-in-law were killed in a car crash, she took over as Elena's and Jeremy's legal guardian and moved into the Gilbert family home. In the beginning, Jenna had trouble coping as an authority figure, having been a partying college student, but as the series progresses she becomes better at it. She begins dating news reporter Logan Fell, who had cheated on her in the past. However, Logan was turned into a vampire by Anna and then killed by history teacher Alaric Saltzman; Jenna was told that he had left town. She later begins a relationship with Alaric. In season 
Title: The Vampire Diaries (season 3)
Content: Nina Dobrev as Elena Gilbert / Katherine Pierce ; Paul Wesley as Stefan Salvatore ; Ian Somerhalder as Damon Salvatore ; Steven R. McQueen as Jeremy Gilbert ; Kat Graham as Bonnie Bennett ; Zach Roerig as Matt Donovan ; Candice Accola as Caroline Forbes ; Michael Trevino as Tyler Lockwood ; Matt Davis as Alaric Saltzman ; Joseph Morgan as Niklaus Mikaelson 
Title: The Vampire Diaries (season 1)
Content: Nina Dobrev as Elena Gilbert / Katherine Pierce ; Paul Wesley as Stefan Salvatore ; Ian Somerhalder as Damon Salvatore ; Steven R. McQueen as Jeremy Gilbert ; Sara Canning as Jenna Sommers ; Kat Graham as Bonnie Bennett ; Candice Accola as Caroline Forbes ; Zach Roerig as Matt Donovan ; Kayla Ewell as Vicki Donovan ; Michael Trevino as Tyler Lockwood ; Matt Davis as Alaric Saltzman 

Question: who plays elena gilbert on vampire diaries?
Answer: Nina Dobrev.