The Alberta Sheriffs Branch is a provincial law enforcement agency overseen by the Ministry of Justice and Solicitor General of the province of Alberta, Canada. Under the authority of the Peace Officer Act, Alberta Sheriffs are provincial peace officers with jurisdiction over the province of Alberta. The Premier of Alberta has the authority to grant emergency police powers to all Alberta Sheriffs in the case of any major emergencies that occur within the province. The Alberta Sheriffs Branch is the largest sheriff service in Canada.