Ambrose Cheung Wing-sum, BBS, JP (Chinese: 張永森; born 10 January 1951) is a businessman, solicitor and is a former member of the Legislative Council of Hong Kong in 1998–2000 for the Urban Council constituency[1] and incumbent Sham Shui Po District Council (Mei Foo North constituency) from 1982 to 2019 and chairman of the Sham Shui Po District Council between 2016 and 2019.

After Cheung obtained his bachelor's degree of Social Sciences form the University of Hong Kong in 1973, he joined the Standard Chartered Bank and was sent to the London headquarters and European branches for a year.

He resigned from the bank to studied law in London and returned to Hong Kong in 1981.

He was first appointed to the Sham Shui Po District Board in 1982 and has been held the office since.

In 2016, he was elected chairman of the Sham Shui Po District Council.