The trio join Derby County owner and chairman Mel Morris, Chief Operating Officer John Vicars and Chief Financial Officer Stephen Pearce on the Board.
David Williams said: “I was privileged and honoured to receive the call from Mel Morris, asking if I would agree to become a director. I am acutely aware that with the privilege comes the responsibility of trying to help ensure that the club delivers the success its fans deserve.
"I know that Mel is determined to deliver stability after a time of turmoil and I am keen to help with that. Nothing is ever certain in sport, but as a long-term fan myself, I recognise that success – on and off the field – is the ingredient we are working for.”
John Kirkland said: “I have served Derby County in a number of roles before and when Mel approached me again, it was an easy decision for me to make. I realise the importance of the club to its supporters and the local community. I hope that my previous experience in serving the club will help. It is like no other business and I look forward to helping shape its development."
Mel Morris added: “These appointments complete our Board of Directors and provide us with a group rich in talent, knowledge, experience and love of the club.”