Assistant Manager Gary Liddle will take training tonight and Thursday, ahead of the weekend's trip to Morpeth Town, with an assistant due to come in later this week.
During Nathan Haslam's time with the football club, he guided the club to the Emirates FA Cup First Round Proper for the first time in twenty years and won last season's North Riding Senior Cup.
Since joining in 2020 - initially as a first-team coach under Chris Hardy before taking charge alongside Lee Bullock - he has managed the Seasiders across 169 games, with 104 coming in solo charge.
Everyone at Whitby Town would like to thank Nathan for his efforts during his time at the Towbar Express Stadium, and with him all the best for the future.