Mr Coker will step down from the role in August leaving the Priority One Board three months to mount a recruitment process.
Priority One chairman, Brett Hewlett, said: "We will be sad to see Andrew go''.
''He has had such a profound impact on the building of our community. Today, Tauranga and the Western Bay of Plenty is the fastest growing regional economy and Priority One is acknowledged as one of the leading economic development agencies in the country.
''I wish to acknowledge the leadership, passion and dedication that Andrew has given to the role over the past 10 years. Based on this reputation, we anticipate that the calibre of applicants for Priority One's new CEO will be extremely high and the recruitment process will begin immediately.''
We wish Andrew all the very best for his future endeavours."