Low Thia Khiang is a Singaporean former politician. A member of the Workers' Party (WP), Low was one of the two opposition MPs in Parliament between 1997 and 2011 and served as Secretary-General of the WP between 2001 and 2018. He served as a Member of Parliament (MP) for Hougang SMC between 1991 and 2011, and also Aljunied GRC representing Bedok Reservoir — Punggol division between 2011 and 2020.

The Workers' Party is a major centre-left political party in Singapore and one of the three contemporary political parties represented in Parliament, alongside the governing People's Action Party (PAP) and the opposition Progress Singapore Party (PSP). It is currently the largest and oldest opposition party in Parliament, having contested every parliamentary election since 1959 against the dominant PAP. The WP is the only political party other than the PAP with elected Members of Parliament (MPs) since the 1991 general election.