Aich (surname)
Aich (also spelled as Aitch) is a Hindu Bengali surname belonging to the Maulika Kayastha caste as well as some other Bengali castes. Notable people with this surname include: 

 Manohar Aich (1912–2016), Indian bodybuilder
 Prodosh Aich (born 1933), retired Bengali-Indian professor and author

References 

German-language surnames
Kayastha
Social groups of West Bengal