Bloomfield began his managerial career at Colchester United before taking over from Gareth Ainsworth at Wycombe Wanderers in 2023.
After leading the Chairboys to the League One automatic promotion places amid the challenge of big-spending Birmingham City and Wrexham last season, he left the club to take over at Luton in January.
But Bloomfield was unable to prevent the Hatters from suffering back-to-back relegations to the third tier and was dismissed after an underwhelming start to the season, with the club 11th in the table.
The club have already added two new players to their squad in January, with midfielder Jamie Donley, 20, arriving on loan from Tottenham Hotspur for the rest of the season, and Brentford’s Myles Peart-Harris also signing a short-term deal.
The U’s play four league games – against Bristol City, Queens Park Rangers, Leicester City and Birmingham City – inside 15 days later this month.
“Matt stood out for his attention to detail, work ethic and his strong belief in building success the right way. He is a coach with a very clear idea of how he wants his teams to play,” said Oxford’s head of football operations Ed Waldron.
“He has a proven track record of developing both teams and individuals through strong leadership and communication, and we believe he is the right person to strengthen the group now and moving forward.”
