Jamie Fullarton has decided to leave the club with immediate effect, the Shaymen have reported.
Halifax now begin the search for a new boss as they prepare for an opening day fixture against Ebbsfleet United in 19 days’ time.
“We’d like to thank Jamie for his contribution and efforts throughout the last season and a half, both on and off the pitch,” a statement read.
“Having joined in the latter stages of the 2017-18 season he retained our position in the National League.
“Jamie also secured a mid-table position at the end of the 2018/19 campaign, a very commendable achievement.
“Jamie has also been responsible for successfully overseeing the transition from part time football to the full time model that we currently have in place.
“We’ll seek to appoint a new manager within the coming days, who will shape and finalise the playing squad for the 2019/20 season.”