Jens Ingwersen (17 August 1871 – October 10, 1956) was a Danish architect during the transition from neo-classicism to functionalism. He was the architect of the telephone company KTAS and is the man behind most of this company's buildings. He often appeared at the Charlottenborg Spring Exhibition. Ingwersen graduated from the Danish Art Academy in 1906. In 1917 he assisted Jens Christian Rantzau in a renovation of the Krengerup house on Funen. He was later made a Knight of the Dannebrog for his services to Danish architecture.