Konstanty Jacek Lubomirski

{{Short description|Polish nobleman}}

{{onesource|date=December 2009}}

{{Infobox noble

| name = Konstanty Jacek Lubomirski

| image = Gdańsk Konstanty Lubomirski.png

| house-type = Szlachta

| noble family = Lubomirski

| CoA = Lubomirski 120px

| father = Stanisław Lubomirski

| mother = Zofia Ostrogska

| spouse = Barbara Domiciella Szczawińska

| spouse-type = Consort

| issue =

| birth_date = 1620

| birth_place =

| death_date = 1663

| death_place =

|title = Prince

|full name =

}}

Prince Konstanty Jacek Lubomirski (1620–1663) was a Polish nobleman (szlachcic).{{Cite book |last1=Ostrowski |first1=Jan K. |url=https://books.google.com/books?id=NebpAAAAMAAJ |title=Art in Poland, 1572-1764: Land of the Winged Horsemen |last2=International |first2=Art Services |date=1999 |publisher=Art Services International |isbn=978-0-88397-131-4 |pages=281 |language=en}}

Konstanty was owner of Jarosław estates. He was Krajczy of the Crown and Podczaszy of the Crown since 1658 and starost of Sącz. He died childless.