Canadian Law
There is strictly only one section that deals directly with nudity under disorderly conduct.

Disorderly Conduct
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Section 174:
Nudity
  (1) Every one who, without lawful excuse,
   (a) is nude in a public place, or
   (b) is nude and exposed to public view while on private property, whether or not the property is his own, is guilty of an offence punishable on summary conviction.

Nude
  (2) For the purposes of this section, a person is nude who is so clad as to offend against public decency or order.

Consent of Attorney General
  (3) No proceedings shall be commenced under this section without the consent of the Attorney General.
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Ontario
In 1996 Canada's most populous province became legally topfree due to a criminal court challenge by Gwen Jacob. This case has set an important precedent for all of the other provinces in Canada. Attempts to change the law to re-criminalize women going bare-breasted in public have not been supported by Canadian voters.

Saskatchewan
In 1998 Lewchuk ruled Kathleen Rice, 42, and Evangelene Godron, 64, didn't violate community standards when they sunbathed topless in a Regina park. Lewchuk warned the acquittal came attached with a qualifier - anyone acting erotically could still be charged.


Research shows:
Decency is defined by the general public average of what is acceptable and/or normal practice.
Simple nude sunbathing or swimming is not considered indecent.


Note: There are other sections under Canadian law that deal with sexual offences and behavior. They have not been mentioned here. This site promotes 'Being Natural', nothing sexual.


Enjoy Life, Be Natural