Sir Terence Michael Heiser GCB (born 1932) is a former British senior civil servant.
Heiser served as Permanent Secretary at the Department of the Environment from 1985 to 1992.[1]
Heiser was appointed Companion of the Order of the Bath (CB) in the 1984 New Year Honours.[2] He was promoted to Knight Commander (KCB) in the 1987 Birthday Honours and to Knight Grand Cross (GCB) in the 1992 New Year Honours.[3][4]