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First name origins & meanings:

1. Latin: Leader
2. Celtic: Leader of the seas

First name variations: Duk, Dukey, Dukie, Duky, Marmadook, Marmahduke, Marmaduke

Last name origins & meanings:

1. English and Irish: from Middle English duk(e) ‘duke’ (from Old French duc, from Latin dux, genitive ducis ‘leader’), applied as an occupational name for someone who worked in the household of a duke, or as a nickname for someone who gave himself airs and graces.
2. English and Irish: possibly also from the personal name Duke, a short form of Marmaduke, a personal name said to be from Irish mael Maedoc ‘devotee (mael, maol ‘bald’, ‘tonsured one’) of Maedoc’, a personal name (M’Aodhóg) meaning ‘my little Aodh’, borne by various early Irish saints, in particular a 6th-century abbot of Clonmore and a 7th-century bishop of Ferns.
3. Scottish: compare the old Danish personal name Duk (Old Norse Dūkr).
4. In some cases, possibly an Americanized form of French Leduc or Spanish Duque.
5. Possibly an Americanized spelling of Polish Duk, a nickname from dukac ‘to stammer or falter’.

Famous people who gave their babies this name: Diane Keaton

This name appears in the following lists: Black History/Civil Rights Leaders, Silver Screen