Ruth Davis (née Hamblin; born June 24, 1994) is a Canadian professional basketball player for the Lakeside Lightning of the NBL1 West. She was drafted 18th overall by the Dallas Wings in the 2016 WNBA draft. Born in Smithers, British Columbia, she played college basketball for Oregon State.
On April 14, 2016, Davis was selected in the second round of the 2016 WNBA draft with the 18th overall pick by the Dallas Wings. Exactly one month later, she made her WNBA debut in a 90–79 win over the Indiana Fever. She recorded three rebounds in just over two minutes of action, and scored one point on 1-of-2 shooting from the free throw line.
On June 9, 2016, Davis signed with the Perth Lynx for the 2016–17 WNBL season. On January 7, 2017, she had a season-best game with 21 points, eight rebounds, five blocks, three steals and three assists in a 108–67 win over the Bendigo Spirit.
On May 17, 2017, Davis signed with the Adelaide Lightning for the 2017–18 WNBL season.
In January 2018, Davis moved to France to finish the season with Tango Bourges Basket.
Davis started the 2018–19 season in Belgium with BC Castors Braine, but left in December 2018. She played the 2019–20 season in Russia with WBC Dynamo Novosibirsk, the 2020–21 season in Poland with DGT AZS Politechnika Gdanska, and the 2021–22 season in Greece with Olympiacos.
In April 2022, Davis signed with the Lakeside Lightning for the 2022 NBL1 West season.
In 2012, Davis represented Canada for the first time at the FIBA Americas U18 Championship for Women. Over four games, she averaged 3.8 points and 1.2 rebounds per game. She was promoted to the Canadian senior national team in the summer of 2013 for exhibitions in Europe and China.
Davis appeared for the Canadian senior national team at the Edmonton Grads International Classic, a three-game series against Brazil in June 2014.