Blake Ellis (born 6 January 1999) is an Australian tennis player.
Ellis won the 2016 Australian Open boys' doubles alongside Alex de Minaur.
Ellis made his senior debut in October 2014 at the Australia F7, where he lost in round one. Between 2015 and 2017, he competed in the ITF Men's Circuit around Australia, Asia and Europe, with his best result being a semifinal appearance in August 2017 in the Thailand F6 Futures tournament in Nonthaburi.
In October 2017, Ellis won his first Challenger match against Austrian Lucas Mielder in the Canberra International.
At the 2018 Shimadzu All Japan Indoor Tennis Championships, Ellis had his best Challenger-level performance to date, winning his qualifying matches then defeating two previous tournament champions in fifth seed Tatsuma Ito and third seed Go Soeda en route to a semifinal loss against fellow Australian and eventual champion John Millman.
In October 2021, Ellis won his fifth ITF doubles title and third for the season.
Ellis won four ATP Challenger doubles titles in 2024 including in Playford, South Australia, and in Sydney, New South Wales, in consecutive weeks alongside Thomas Fancutt. He won his first ITF title in November in Brisbane against Blake Mott to attain a career-high ranking of No. 319. He finished the year ranked 338.
After a great season in 2024, Ellis was awarded a wildcard to compete in the 2025 Australian Open qualifying competition, aiming to reach a Grand Slam main draw for the first time. However, he fell short losing to Dominik Koepfer in a close 5-7, 5-7 match. Despite losing the opportunity to compete for a singles grand slam he did play with his partner Thomas Fancutt in the doubles main draw of the Australian Open but the doubles team made an exit in the first round.