Chiefs chairman, Dallas Fisher said Dawson's contribution to the Chiefs had been immense.
"He has done an outstanding job and leaves the Chiefs in a very strong position moving forward."
Fisher said Dawson had help implement new integrated training and administration facilities at Ruakura, established new infrastructure within the organisation and taken high performance rugby to a new level both on and off the field.
The Chiefs will commence a recruitment process for Dawson's replacement later in the month.
Dawson will leave the Chiefs in late August.