Engblom v. Carey was a 1982 court case decided by the U.S. Court of Appeals for the Second Circuit. It is chiefly notable for being the only significant court decision based on a direct challenge under the third amendment of the Constitution.

The case was initiated by a 1979 strike by New York State correction officers. While the officers were on strike, some of their duties were performed by National Guardsmen who were activated. At Mid-Orange Correctional Facility (and other facilities) striking employees were evicted from employee housing which was then used to house some of the National Guard. Two of the evicted officers at Mid-Orange C.F., Marianne E. Engblom and Charles E. Palmer, subsequently filed suit against the state of New York and its governor, Hugh L. Carey.

The decision, rendered on May 3, 1982, established that the National Guardsmen legally qualify as soldiers under the Third Amendment, that the amendment applies to state as well as federal authorities, and that the protection of this amendment extends beyond home owners. The majority stated that the officers' occupancy in the rooms was covered under the legal rules of "tenancy" and was protected under the Third Amendment. There was a minority dissent which stated the officers' occupancy was covered under the lesser protection of employee housing and held that the special circumstances of residency on prison grounds superseded Third Amendment protection. The case was remanded to district court where it was decided in the defendants' favor again, due to the principle that as agents of the state, the defendants were covered by a qualified immunity unless they were knowingly acting illegally. In the absence of previous precedents on this issue, the standard of knowing illegality was not met.