575 is a landmark Supreme Court of Canada decision on the standard for allowing public interests to gain standing to challenge a law.

Joseph Borowski was a prominent anti-abortion activist in Saskatchewan who wanted to challenge the abortion provisions under section 251(4), (5), and (6) of the Criminal Code as violations to right to life in the Canadian Bill of Rights.

Martland's reasoning was largely based on the previous decision of Thorson v. Attorney General of Canada, [1975] 1 S.C.R.

Borowski was found to meet this requirement as it would be difficult to bring such an issue to court without having an interest group make a challenge.

The test was later re-articulated more narrowly in the decision of Canadian Council of Churches v. Canada (Minister of Employment and Immigration), [1992] 1 S.C.R.