Cyd Ho Sau-lan () is a former member of the Legislative Council of Hong Kong (Legco) for the Hong Kong Island constituency.
She is a founding member of the Labour Party, since December 2011, and currently holds the position of vice-chairwoman. Previously, she was a founding member of The Frontier, another pro-democracy political group. Since 2006, she has been a founding councillor of the World Future Council.
She has garnered a reputation for promoting universal suffrage, rule of law, human rights, and equal opportunity, as well as advancement in the interests of women, homosexuals and other minority groups.
Ho studied at the University of Waterloo, Canada. She worked in the textile trading industry from 1979 to 1995.
In 1991, Ho helped Emily Lau during the election campaign, the first open direct election of Legco in Hong Kong. In 1993, she founded the liberal pressure group "United Ants" with other pro-democracy political activists. In 1995, she worked as an assistant to Margaret Ng, a lawmaker representing the legal profession in Legco. In 1996, along with other political activists, she founded The Frontier.
She was elected a legislative councillor for the geographical constituency of New Territories East in 1998 in the first Legco election since the transfer of sovereignty over Hong Kong from the UK to China. She was re-elected in the c in 2000. She chaired bills committees such as the 2004 Education (Revised) Bill and the 2004 Examination Authority Bill, and was vice-chair of the panel on environmental affairs. She chaired the Sub-committee under the Home Affair Panel to study questions of discrimination based on sexual orientation between 2000 and 2004.
She was elected as a District Council member of the Central and Western district via the Kwun Lung (觀龍) constituency in November 2003, unseating veteran Ip Kwok-him of the DAB with a margin of 64 votes. She also supported members of other pro-democracy political groups such as Civic Act-up, which were also contesting seats in the Wanchai district council.