The 2019 Nottingham Open (also known as the Nature Valley Open for sponsorship purposes) was a professional tennis tournament played on outdoor grass courts.

It was the 12th edition of the event for women and the 24th edition for men.

It is classified as a WTA International tournament on the 2019 WTA Tour for the women, and as an ATP Challenger Tour event for the men.

The event took place at the Nottingham Tennis Centre in Nottingham, United Kingdom from 10 through 16 June 2019.

[1] The following players received wildcards into the main draw: The following player received entry into the singles main draw as a special exempt: The following player received entry into the singles main draw as an alternate: The following players received entry from the qualifying draw: The following players received wildcards into the main draw: The following player received entry using a protected ranking into the main draw: The following players received entry from the qualifying draw: The following players received entry as lucky losers: The following pairs received wildcards into the doubles main draw: