Gary Allen Srery (July 26, 1942 – April 27, 2011) was an American rapist and serial killer who was responsible for murdering at least four women in Calgary, Alberta.

While little is documented about Srery's early life, his criminal history in the United States shows he was involved in multiple sexual offences starting in the 1960s.

Shortly after, he failed to appear in court and fled the United States, reportedly crossing into Canada illegally.

[10] While in Canada, Srery lived as a drifter, primarily residing in Alberta and British Columbia, and worked in casual or under-the-table jobs, often as a cook or a salesman.

[10][6] Srery’s mobility, use of aliases, switches of vehicles and an ever-changing appearance allowed him to avoid scrutiny from law enforcement during his time in Canada.

[6] Srery continued living in Canada until his arrest in 1998 in New Westminster, British Columbia, for a violent sexual assault.