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The 35-year-old, who made his professional debut in 2006, says this year will be his last season of Super Rugby with the Crusaders.
Crockett made the announcement on social media this morning.
"It is never an easy thing to know when the time is right, but my family have made a number of sacrifices over the past 13 years which have allowed me to live out my dream. Now it's time for me to give back to them, simply by being there more than I have been able to as a professional rugby player," Crockett said.
"To all of the coaches, management, supporters and of course, my team mates over the years, thank you for your belief, support and friendship throughout my international and Super Rugby career.
"I intend on making the most of my last season with the Crusaders, enjoying every minute of it and giving this team everything I've got."
Despite finishing his international and Super Rugby career, Crockett will still be playing rugby in New Zealand - he has signed a two-year deal to play for the Tasman Mako in the Mitre 10 Cup.
Crockett spent a year at Otago Boys' High School.