Louis Koo Tin-lok is a Hong Kong actor, singer and film producer. He began his professional career as an actor in local television series, winning TVB's Best Actor award in 1999 and 2001. After 2001, he fully focused on film career and became one of the stalwarts of the Hong Kong film industry. In 2018, Koo was awarded the Hong Kong Film Award for Best Actor, Asian Film Award for Best Actor and the Hong Kong Film Directors' Guild Award for Best Actor for his performance in the 2017 film Paradox.

Asian Film Award for Best Actor has been awarded annually since 2007 by the Hong Kong International Film Festival Society.