onomasti
23
Oct

Jacob

A form of Iakovos

Iakovos, Jacob, James, in English

It keeps the same day as the name it comes from — everything below is that name’s.

Key facts

Iakovos at a glance

Name day
2 name days are kept — Greek custom keeps them all
This year · 2026
Thursday, 30 April · Friday, 23 October
Next year · 2027
Friday, 30 April · Saturday, 23 October

Variations

Forms & nicknames of the name

One name takes many forms — the formal, the everyday, the affectionate, and the spellings that travelled abroad. Each has its own page here, and all share the same day.

Greek forms

English & romanised

Iakovos you are hereJacob James

Know another form?

Missing a form your family uses? Add it — a person reviews every submission before anything is published.

Iconography

Iakovos in sacred art

DepictingHoly Apostle James, son of Zebedee, brother of St John the Theologian

DepictingHoly Apostle James, the Brother of the Lord

Images from Wikimedia Commons under free licences, credited to their source. We show a depiction only where the saint on this name’s day could be identified against our own recorded feast date — never a picture found by searching for the name.