Sun Source Football Club (Chinese: 天旭足球會), currently known as Supreme FC due to sponsorship reasons, is a Hong Kong football club which currently competes in the Hong Kong Second Division League.

The club earned the right to be promoted to the Hong Kong Premier League after winning the 2014–15 Hong Kong First Division League with two games to spare.

However, the club eventually declined promotion, citing financial difficulties.

From 2016 to 2018, the club was branded as HKU CXSC Sun Source.

In the 2019–20 season, Sun Source was rebranded again as Lansbury, and was coached by former Kawasaki Frontale and Eastern player Yusuke Igawa.