Ingelin Christine Killengreen (born 12 November 1947) is a Norwegian jurist and former Police Commissioner in the National Police Directorate. Killengreen was born in Bergen. In her youth she attended Bergen Cathedral School. She graduated at the University of Oslo as a cand.jur. in 1972. After working for more than 20 years in the Norwegian Ministry of Justice and the Police, where she held positions as deputy under-secretary of state (1988—1993) and permanent under-secretary of state (1993—1994), she became the first female Police Chief in Oslo in 1995.