The Only Way Is Essex series 20

The twentieth series of the British reality television programme The Only Way Is Essex was confirmed on 3 June 2015 when it was announced that it had renewed for at least a further six series, taking it up to 21 series. The series launched on 5 March with the cast going to Tenerife, and concluded on 3 May 2017 after eighteen episodes, making this the longest series to date. Mario Falcone, Jamie Reed and Charlie King all returned during the series. Lauren Pope also made a return to the series during the final episode.

This was the first series to include new cast members Amber Turner, Myles Barnett, Yazmin Oukhellou, Jack Rigden, Jordan Brook and Jade Lewis. This was the final series to include cast members Ben Shenel and Ercan Ramadan, as well as Kate Wright who announced her departure ahead of the final episode. This series focused on the end of the line for the relationship between Megan McKenna and Pete Wicks, a divide forming following the fallout between Chloe Sims and Megan, as well as Gemma Collins focusing her attention on having a baby. It also includes Amber D and Chris.