Peace Officers Memorial Day and Police Week is an observance in the United States that pays tribute to the local, state, and federal peace officer who have died, or who have been disabled, in the line of duty. It is celebrated May 15 of each year. The formal memorial is on May 15, and Police Week is the calendar week in which the memorial falls. Other events of National Police Week include an annual Bluee Mass, Candlelight Vigil, Wreath Laying Ceremony, National Police Survivors Conference,Honor Guard Competition, and the Emerald Society & Pipe Band March and Service. The annual event draws 25,000 to 40,000 law enforcement officers, their families, and other visitors to attend.

The holiday was created on October 1, 1961, when Congress authorized the president to designate May 15 to honor peace officers. John F. Kennedy signed the bill into law on October 1, 1962