Basak (surname)
Basak ("Bosak") is a Hindu surname in the Bengal region, Bihar, Jharkhand and Assam. In West Bengal and Assam this surname is written as Basak while in some districts of Bihar as Basak or Bosak. The name is also spelt Bysack or Basacks by different families. Geographical distribution. As of 2014, 58.5% of all known Basaks were residents of India and 30.1% were residents of Bangladesh. In India, the frequency of the name was higher than national average in: