Koshy is an Indian Saint Thomas Christian name, and is Syriac Malayalam for the biblical name Joshua. Notable people with the name include:
Elizabeth Koshy, Indian sport shooter J B Koshy (born 1947), Indian judge Koshy Koshy (1825–1899), Indian Anglican priest and Malayalam novelist Liza Koshy (born 1996), American actress and YouTube personality Mridula Koshy (born 1969), Indian writer Ninan Koshy (1934–2015), Indian political thinker Vinitha Koshy, Malayalam film actress Hannah Reji Koshy, Malayalam film actress and model
References https://babynameseasy.com/malayali-boy-name/koshy https://www.ancestry.com/name-origin?surname=koshy https://www.familyeducation.com/baby-names/name-meaning/koshy