Karen So (born 27 April 1990) is a Hong Kong rugby union player.

She represented Hong Kong at the 2017 Women's Rugby World Cup as they made their first World Cup appearance.

[1][2] So lived in Canada for 18 years before she moved back to Hong Kong at the age of 22.

She studied at the University of Hong Kong.

[3] In 2018 she was given the captaincy role in Hong Kong's autumn tour of Spain and Wales.