- Duale
- Dualeh
- Duan
- Duangchan
- Duarte
- Dubas
- Dubery
- Dubiel
- Dubienko
- Dubin
- Dubo
- Dubois
- Dubourg
- Dubova
- Dubravac
- Dubsky
- Duce
- Duch
- Duchnik
- Duck
- Duckert
- Duckett
- Duclos
- Duda
- Dudas
- Duddles
- Duddy
- Dudeck
- Dudek
- Duderstadt
- Dudkiewicz
- Dudkowski
- Dudu
- Duduianu
- Dudzik
- Dudzinski
- Due
- Dueholm
- Duel
- Duelund
- Duer
- Duez
- Duff
- Duffield
- Duffill
- Duffner
- Duffy
- Dufke
- Dufner
- Dufour
- Dufrechou
- Dufrenne
- Dufresne
- Dufva
- Dug
- Dugan
- Duggan
- Duggen
- Duhamel
- Duhn
- Duhr
- Duijn
- Duizer
- Dujardin
- Dujmovic
- Duk
- Dukaj
- Dukat
- Dukic
- Dul
- Dulas
- Dulkiewicz
- Dullum
- Dulong
- Dulwich
- Duly
- Duman
- Dumbuya
- Dumdei
- Dumitrache
- Dumitrascu
- Dumitrescu
- Dumitriu
- Dumitru
- Dumke
- Dumon
- Dumont
- Dumpert
- Dun
- Duna
- Dunai
- Dunbar
- Duncan
- Dunch
- Dunckel
- Duncker
- Dung
- Dunga
- Dungal
- Dungey
- Dunk
- Dunkan
- Dunkel
- Dunker
- Dunkerley
- Dunlop
- Dunn
- Dunne
- Dunning
- Dunsmore
- Dunwell
- Dunya
- Duo
- Duong
- Dupont
- Duport
- Duprat
- Dupuis
- Dupuy
- Dura
- Durak
- Durakovic
- Dural
- Duran
- Durand
- Durani
- Durazo
- Durcan
- Durda
- Duric
- Durie
- Durig
- Durin
- During
- Duris
- Durkee
- Durkovic
- Durland
- Durmaz
- Durmishaj
- Durmishi
- Durmus
- Durnal
- Duro
- Durousseau
- Durr
- Durrani
- Durrant
- Durst
- Durston
- Dursun
- Duru
- Durukan
- Durville
- Dusan
- Duse
- Dut
- Dutoit
- Dutschke
- Dutta
- Dutton
- Duus
- Duval
- Duvall
- Duve
- Duvnjak
- Duwel
- Duysen
- Duz