Keiynan Lonsdale (born 19 December 1991) is an Australian actor, dancer, and singer-songwriter. He is known for roles such as Oliver Lloyd on the ABC series Dance Academy (2012–2013) and Wally West / Kid Flash on The CW series The Flash (2015–2020) and Legends of Tomorrow (2017–2018); and for film roles in The Divergent Series: Insurgent (2015), The Finest Hours (2016), and Love, Simon (2018). He has also worked as an MTV VJ, and released original music recordings.
Lonsdale was born in Sydney to a Nigerian father of Edo descent and an Australian mother of Irish and Danish descent. He is the youngest of six children on his mother's side, with three brothers and two sisters, and one of seven from his father's side; in total he has eleven siblings.
Lonsdale got his first acting job in 2007, with a bit dancing part in the film Razzle Dazzle: A Journey into Dance. The following year, he appeared in an episode of the Australian television medical drama All Saints. Lonsdale became a recurring member of the cast of the Australian teen drama series Dance Academy in the 2012 second season; his character, Oliver Lloyd, became a regular in the third and final season.