Paul Kutter had three other sons: Joseph Kutter (1894–1941), one of Luxembourg's foremost painters; Bernard (1889–1961) who also became a photographer; and Paul Kutter jr.
(1899-1941).
There was also a daughter, Catherine Louise Marie (1891–1958).
Both his son Edouard and his grandson, also called Edouard, continued to run the Kutter photographic business in Luxembourg City for many years.Examples of Paul Kutter's photographs can be seen at Luxembourg's Photothèque.