Last name イサク (Isak 
, Isac 
, Esack 
) , throughout the world, is a common surname. The family name イサク is characteristic of Somalia, where it is quite a common surname, Moldova, and North Macedonia (explore the name in all countries). In absolute terms, the name is most common in Somalia, India, and Romania. More frequently, イサク is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Isak | Somalia, Brazil, Indonesia, South Africa, India |
| Isac | Brazil, Indonesia, Romania, South Africa, India |
| Esack | Malaysia, Brazil, South Africa, United States, India |
| イサク | Japan |
Icchak, Iiro, Iisakki, Ike, Is., Isaac, Isaach, Isaack, Isaacs, Isaacus, Isaak, Isacco, Isach, Isaku, Ishak, Issaak, Issac, Itshak, Itzhak, Izaac, Izaak, Izak, Izsak, Izsák, Jicchak, Mulens, Yitshak, Yitzhak, Айзек, Айк, Изаак, Ике, Исаак, Исаак, Айзек, Исаако, Исак, Исако, Исхак, Ицхак, Ицхок, Ісаак, Ісак, Іцхак, אייזיק, אייזקס, יצחק, أوتو, إسحاق, إسحق, اسحاق, ايزاك, ইসহাক, アイク, イケ, and 이삭