The 2019 Koser Jewelers Tennis Challenge was a professional tennis tournament played on outdoor hard courts.

It was the thirteenth edition of the tournament which was part of the 2019 ITF Women's World Tennis Tour.

It took place in Landisville, Pennsylvania, United States between 5 and 11 August 2019.

[1] The following players received wildcards into the singles main draw: The following player received entry as a special exempt: The following players received entry from the qualifying draw: The following players received entry as lucky losers: