The 35-year-old, who made his professional rugby debut in 2006, is the most capped Super Rugby player of all time and ran out for his 13th Super season and in his 188th Crusaders match on Saturday in their opening match win over the Chiefs.
He played his 71st and final Test for the All Blacks against Wales in the last Test of 2017.
Despite finishing his international and Super Rugby career, Crockett will still play domestic rugby in New Zealand after signing a two-year deal with the Tasman Mako.
