The contracts sustain more than 600 jobs with the defence giant, and Babcock, in North Wales, North and East Yorkshire, Cornwall and Lancashire.
Under the agreements, the two organisations will provide a range of services to the Royal Navy and Royal Air Force to support aircraft operations at RAF Valley in Anglesey, North Wales, RAF Leeming in North Yorkshire and Royal Naval Air Station Culdrose in Cornwall.
The contracts cover aircraft maintenance, fleet management and technical and engineering support for the jets.
Peter Jones of BAE Systems said: "These contracts will allow us to continue to deliver end-to-end service for our Hawk customers.
"Currently we ensure that 95% of the Hawk fleet is available at any one time and we are confident in our ability to continue to deliver this.
"Together with our service delivery partner, Babcock, we have managed to improve the level of support service offered to our customers and reduce the costs of their Hawk fleet.
"These contract awards demonstrate the excellent relationship between BAE Systems and the UK Ministry of Defence."