Nicholas Marcus Thompson (born 16 July 1986) is a Trinidadian-Canadian human rights advocate, nonprofit executive, and keynote speaker known for his work in addressing systemic discrimination and advancing equity and inclusion.

He serves as the President and Chief Executive Officer of the Black Class Action Secretariat (BCAS), a litigation and advocacy organization dedicated to dismantling systemic discrimination in workplaces and public institutions.

Under Thompson’s leadership, BCAS spearheaded the landmark $2.5 billion Black Class Action lawsuit against the Canadian federal government, challenging systemic discrimination across 99 departments and agencies and representing 45,000 impacted workers.

[11] Thompson was soon after elected as Chairperson of Racially Visible Committee (RVC) and Vice-President of the Greater Toronto Area Council of the Public Service Alliance of Canada.

[20][21] Thompson has been a prominent figure in advocating for the rights of Black Canadians on the international stage, focusing on discrimination issues within Canada’s federal public service.

On September 25, 2022, Thompson announced at the Parliament building in Ottawa a significant development alongside figures like New Democratic Party Leader Jagmeet Singh, Secretary General of Amnesty International Canada Ketty Nivyabandi, PIPSC Vice President Norma Domey, and MP Matthew Green.

[24] On December 2, 2020, the landmark case Nicholas Marcus Thompson et al V. Her Majesty was filed, naming the entire federal public service as defendants.

[25] The proposed class-action lawsuit was filed on behalf of Black federal public service employees who faced systemic discrimination related to hiring and promotions since 1970.

The claim states that the Employment Equity Act sought to prevent discrimination but in reality, there has allegedly been a de facto practice of Black employee exclusion throughout the public service because of the permeation of systemic discrimination through Canada’s institutional structure..[26] In January 2020, Thompson was awarded the Activist of the Year by the Public Service Alliance of Canada's Greater Toronto Area Council.