Canadian Heritage is the e principal federal department responsible for cultural matters. From their website: "Canadian Heritage is responsible for national policies and programs that promote Canadian content, foster cultural participation, active citizenship and participation in Canada's civic life, and strengthen connections among Canadians."
Canadian Radio-Television and Telecommunications Commission (CRTC)
Canada Council for the Arts
Usually referred to as the Canada Council, this is a national arm's-length agency which fosters the development of the arts in Canada through grants, services, and awards to professional Canadian artists and arts organizations.
Canadian Commission for Unesco
Canadian Commission for Unesco acts as a forum for governments and civil society to mobilize the participation of Canadian organizations and committed individuals in UNESCO's mandated areas: education, natural and social sciences, culture and communication and information.
Parliament of Canada
The Parliament of Canada has a searchable site for Senate and House of Commons debates, committees, reports and proceedings including:
Library of Parliament
Research publications on Canadian cultural issues prepared for parliamentarians to review topical issues e.g. http://www.cscd.gov.bc.ca/arts_culture/Federal government policy on arts and culture, by Michael Dewing (rev. ed. 2013)
Royal Commission on National Development in the Arts, Letters and Science (Also known as the Massey Commission).