Library and Archives Canada holds immigration records from 1865 to 1935. You can search these records by name, but a Social Insurance Number (SIN) is not required as SINs were not issued until 1964.
Ancestry.ca offers access to Canadian immigration records, including passenger lists and border crossing records. While a SIN is not a searchable field, you can search by name and narrow results using other filters.
Immigration, Refugees and Citizenship Canada provides information on how to access immigration records. For records after 1935, you may need to contact IRCC directly, but be aware that a SIN is required for living individuals' records due to privacy laws.
FamilySearch offers guidance on researching Canadian immigration records, including those held by Library and Archives Canada and other archives. Searching by name is possible, but SINs are not applicable for historical records.
Genealogy.com provides tips and resources for finding Canadian ancestors through immigration records. While SIN is not a relevant search term for historical genealogy, searching by name and using other genealogical tools can be effective.
For post-1935 immigration records, IRCC's Access to Information and Privacy division can assist. Note that requests must comply with privacy laws, and a SIN may be required to identify the individual's records, but only for the individual themselves or their legal representative.
MyHeritage offers a collection of Canadian immigration and travel records. Users can search by name, but SIN is not a search parameter due to the historical nature of the records and privacy considerations.
The Office of the Privacy Commissioner of Canada discusses the privacy considerations around accessing immigration records, emphasizing that a SIN can be used to access one's own records but is subject to the Privacy Act.