Jack Pinnington Jones (born 30 March 2003) is a British tennis player.
Given a wildcard into qualifying for the 2021 Wimbledon Championships – Men's singles qualifying when he was 18 years-old, Pinnington Jones overcame a deficit of 983 ranking places to win 6-4 6-3 against Brazilian Joao Menezes in the first round. He won his first professional tournament in October 2021 in Antalya on the ITF World Tennis Tour, only dropping two sets in his six matches on the way to the title.
He was awarded a wildcard alongside Aidan McHugh into the doubles main draw at the 2024 Nottingham Open. He also entered the qualifying for the singles and knocked out Ryan Peniston and Felix Gill to reach the main draw. He then beat Arthur Fery before overcoming British No. 1 player Cameron Norrie, in three sets, to reach the quarterfinals.
In June 2024, on his Major debut, he was awarded a wildcard into the men's doubles event of the 2024 Wimbledon Championships alongside compatriot Jacob Fearnley. At the same tournament he participated in the qualifying competition in singles where he also received a wildcard.