Barry Hills has been granted a temporary licence by the British Horseracing Authority to take over the running of Kingwood House Stables in Lambourn following the death of his son, John, on Sunday.
John Hills, 53, who was diagnosed with cancer in the spring, was the eldest of veteran trainer Hills' five sons and brother of former jockeys Michael and Richard and trainer Charlie Hills.
He married Fiona in 1987 and was the father of four daughters.
Hills senior officially retired in 2011.
The BHA tweeted: "Barry Hills granted temporary trainer's licence with immediate effect to take control of yard previously under the care of John Hills.
"A minute of applause will be held at all racecourses with fixtures today to celebrate the life of John Hills.
"Thoughts of all at BHA remain with the Hills family and everyone at Kingwood House Stables at this time."