- Gaal
- Gabel
- Gabelsberger
- Gabianelli
- Gabrielson
- Gabris
- Gacem
- Gacioch
- Gaddess
- Gaddy
- Gadeken
- Gadient
- Gaebler
- Gaeke
- Gaertner
- Gaffney
- Gagan
- Gage
- Gahn
- Gahr
- Gaia
- Gaines
- Gaither
- Gaitskill
- Galakatos
- Galati
- Galbierz
- Gale
- Gales
- Galiley
- Galinsky
- Galkowski
- Gallagher
- Gallant
- Gallen
- Galli
- Gallion
- Gallo
- Gallop
- Galloway-Zapi
- Galovich
- Galvin
- Gamache
- Gambaro
- Gambino
- Gamble
- Gamblin
- Gamm
- Gammage
- Gammon
- Gandolfo
- Gandy
- Ganey
- Gang
- Ganic
- Ganim
- Ganley
- Gann
- Gannon
- Ganschaw
- Gansner
- Gant
- Gantz
- Gapsch
- Garagiola
- Garamella
- Garascia
- Garavaglia
- Garaviaglia
- Garber
- Garbow
- Garchitorena
- Garcia
- Gardin
- Gardiner
- Gardner
- Gardocki
- Garesche
- Garey
- Garganigo
- Garger
- Garin
- Garland
- Garlich
- Garms
- Garner
- Garnett
- Garrecht
- Garrett
- Garrison
- Garth
- Gartner
- Garvels
- Garvey
- Garvin
- Gaschler
- Gaskin
- Gasparotto
- Gasparovic
- Gass
- Gassett
- Gast
- Gastler
- Gaston
- Gasway
- Gates
- Gatewood
- Gathard
- Gathings
- Gatz
- Gauer
- Gaugh
- Gault
- Gaume
- Gaus
- Gausch
- Gauss
- Gautam
- Gauvin
- Gavin
- Gavric
- Gawedzinski
- Gaworski
- Gay
- Gaynor
- Gayou
- Gazall
- Gearhart
- Geary
- Gebel
- Gebert
- Gebhart
- Gebken
- Gedera
- Geekie
- Geerlof
- Geers
- Gegel
- Gegg
- Gehlert
- Geibel
- Geiger
- Geigle
- Geil
- Geile
- Geimer
- Geisel
- Geiser
- Geisz
- Geitz
- Gelber
- Geldermann
- Gelfand
- Gelfman
- Geller
- Gellman
- Gelven
- Gemmer
- Gendece
- Gender
- Gendron
- Genetti
- Gengler
- Geno
- Genovese
- Gentle
- Gentry
- Genz
- George
- Georgen
- Georges
- Georgevitch
- Geppert
- Gera
- Geraci
- Gerard
- Gerau
- Gerber
- Gerchen
- Gerdes
- Gerdine
- Gereau
- Gerhard
- Gerhart
- Gerheauser
- Gerik
- Geringer
- Gerke
- Gerley
- Gernstein
- Geronsin
- Gers
- Gershenson
- Gershilevich
- Gerstein
- Gerstenkorn
- Gerth
- Gerwel
- Gestring
- Getchman
- Gettemeier
- Getter
- Getz
- Ghee
- Ghirardi
- Ghnouly
- Gholami
- Gholston
- Ghormley
- Ghosh
- Giacaman
- Giaminetti
- Giammanco
- Giancola
- Gianino
- Giardina
- Gibala
- Gibbons
- Gibbs
- Gibler
- Gibson
- Giddings
- Gidionsen
- Giegling
- Gier
- Gierczuk
- Gierse
- Giese
- Gieselman
- Giesler
- Giessman
- Gifford
- Giganti
- Gilbane
- Gilberg
- Gilbert
- Gildehaus
- Giles
- Gilfone
- Gilje
- Giljum
- Gilker
- Gilkey
- Gill
- Gillam
- Gilleo
- Giller
- Gillespie
- Gillham
- Gilliam
- Gillick
- Gilliland
- Gillispie
- Gillman
- Gillmann
- Gillyon
- Gilmer
- Gilmor
- Gilmore
- Gilsinger
- Gilsinn
- Gilstrap
- Giltner
- Ginger
- Ginsberg
- Ginsburg
- Ginther
- Giofre
- Gioia
- Gion
- Giovanni
- Gipson
- Girard
- Girtman
- Gist
- Gitt
- Gittemeier
- Gittons
- Giunta
- Giuseffi
- Givens
- Gladis
- Gladney
- Glaenzer
- Glasby
- Glasener
- Glaser
- Glasper
- Glaspy
- Glass
- Glassbrenner
- Glassman
- Glasz
- Glatz
- Glauber
- Glauser
- Glazer
- Glazier
- Gleason
- Glebs
- Gleckler
- Gleich
- Gleiforst
- Glenn
- Glestein
- Glick
- Glickert
- Gligros
- Glik
- Gloeckle
- Glore
- Glossop
- Glover
- Glueck
- Glunt
- Gmeiner
- Gmelich
- Gmerek
- Gnojewski
- Go
- Goad
- Gober
- Gockel
- Godar
- Godbee
- Godfrey
- Godi
- Godlove
- Godwin
- Goebel
- Goeckeler
- Goedde
- Goeddel
- Goede
- Goedeker
- Goeke
- Goelz
- Goerger
- Goering
- Goerke
- Goerlich
- Goersch
- Goessling
- Goetsch
- Goetter
- Goetz
- Goff
- Goffstein
- Goforth
- Goggin
- Goggins
- Goggio
- Gogue
- Goins
- Gokin
- Gold
- Goldbeck
- Goldberg
- Golde
- Golden
- Goldenberg
- Goldfeder
- Goldkamp
- Goldman
- Goldschmidt
- Goldsmith
- Goldstein
- Goldworm
- Golik
- Golimowski
- Gollihur
- Gollub
- Golomski
- Golterman
- Goltermann
- Gonce
- Gondzur
- Gong
- Gonser
- Gonzales
- Gonzalez
- Good
- Goode
- Gooden
- Goodenough
- Goodhart
- Goodheart
- Gooding
- Goodloe
- Goodlow
- Goodman
- Goodrich
- Goods
- Goodwin
- Gool
- Goolsby
- Gooris
- Goosby
- Gootzeit
- Gorden
- Gordon
- Gore
- Gorecki
- Gores
- Gori
- Gorla
- Gorman
- Gormley
- Gornet
- Gorski
- Gorsuch
- Gosa
- Gosebrink
- Gosh
- Gosik
- Goss
- Gotter
- Gottschalk
- Gotwals
- Goudy
- Gough
- Goughenour
- Gougisha
- Gould
- Govero
- Gowan
- Gowen
- Gower
- Grabel
- Grabian
- Grabowski
- Grace
- Grade
- Gradford
- Gradle
- Grady
- Graef
- Graeff
- Graeler
- Graesser
- Graf
- Graflage
- Graham
- Gralen
- Grana
- Granat
- Granata
- Granberry
- Grand
- Granda
- Grandgenett
- Grandorff
- Grandstaff
- Granger
- Granich
- Grant
- Grantham
- Grass
- Grasser
- Grate
- Grater
- Grattendick
- Graudin
- Grauer
- Graul
- Gravatt
- Graven
- Graves
- Gravitt
- Gray
- Grays
- Grayson
- Greathouse
- Greaves
- Greco
- Greeley
- Green
- Greenberg
- Greenblatt
- Greene
- Greenfield
- Greening
- Greenlaw
- Greenlee
- Greenman
- Greenquist
- Greenspan
- Greenwald
- Greenwood
- Greer
- Grega
- Gregg
- Gregory
- Greider
- Greiman
- Grein
- Greiner
- Grele
- Gremaud
- Grenier
- Greubel
- Grewe
- Grice
- Griebenow
- Grieco
- Griege
- Gries
- Griese
- Griesedieck
- Griesemer
- Grieshaber
- Griesman
- Griffard
- Griffero
- Griffin
- Griffing
- Griffith
- Grigg
- Griggs
- Grigone
- Grigsby
- Grim
- Grimaud
- Grimes
- Grimi
- Grimm
- Grimoldi
- Grimshaw
- Grinberg
- Grininger
- Grise
- Grissom
- Grivna
- Grizzel
- Grobe
- Groeller
- Groeper
- Groezinger
- Groff
- Grogan
- Groh
- Groman
- Gronau
- Grone
- Groom
- Groover
- Gropler
- Grosman
- Gross
- Grossberg
- Grossenheider
- Grossglauser
- Grossman
- Groth
- Grothe
- Grove
- Groves
- Grow
- Growe
- Grubb
- Grubbs
- Gruber
- Gruchala
- Gruen
- Gruenbacher
- Gruenberg
- Gruendler
- Gruenewald
- Gruenstein
- Gruhala
- Grumich
- Grumke
- Grunbaum
- Grundel
- Grundig
- Grundy
- Gruneisen
- Grunzinger
- Grupe
- Grush
- Gruswitz
- Gruszka
- Gruzeski
- Grywatch
- Grzesik
- Gualdoni
- Guariglia
- Guarino
- Guber
- Gude
- Gudenkauf
- Gudermuth
- Gudiswitz
- Guehne
- Guelbert
- Guelker
- Guempel
- Guenther
- Guerdan
- Guerra
- Guerrant
- Guerrero
- Guest
- Guethler
- Guhe
- Guidorzi
- Guidry
- Guignard
- Guignon
- Guile
- Guilfoy
- Guimbarda
- Guinan
- Guinn
- Guion
- Guirl
- Guise
- Guletz
- Gulledge
- Guller
- Gulley
- Gumaer
- Gummersbach
- Gumper
- Gund
- Gundy
- Gunn
- Gunter
- Gunther
- Gupta
- Gurevich
- Gurlen
- Gurley
- Gurnea
- Gusev
- Gushinsky
- Gusov
- Guthrie
- Gutic
- Gutmann
- Gutnikov
- Gutweiler
- Guy
- Guynn
- Guyol
- Guyse
- Guyton
- Guzman
- Gwinn
- Gyore