Sean Martyn Rex Keenan (born 18 January 1993)^[1] is an Australian actor, best known for his titular role in the children's television series Lockie Leonard and for his role as Gary Hennessey in the television series Puberty Blues.

In 2011, Keenan appeared in several television series, including Cloudstreet. He has a role in the 2013 film Drift.

Keenan was born and grew up in the Western Australian town of Busselton, and later relocated to Sydney. He has a twin sister, Lily.^[2][3][4][5]