Gerald Giam Yean Song is a Singaporean politician. A member of the opposition Workers' Party (WP), Giam was previously the Non-Constituency Member of Parliament between 2011 and 2015 of the 12th Parliament of Singapore. Giam has been the Member of Parliament (MP) representing the Bedok Reservoir–Punggol division of Aljunied GRC since 2020 and was elected as Policy Research Team Head of the Workers' Party Central Executive Committee (CEC) in 2022.

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.