- Gallagher, John M.
- Gandara, J. B.
- Gardeners of Tucson
- Gardiner Family
- Garrison, James
- Gastelum, Carlos
- Gates, Hoagland
- Gatewood, Charles Baehr
- General Store, Tucson Ledger
- Genung, Dan
- Genung, Mabel
- George, W. S.
- Gerten, Frank
- Getzler, Barbara
- Gibson Copper Company
- Gila River War Relocation Center Project Attorney records
- Gilbert, Hugh C.
- Gilpin and Greenway Air Lines
- Glens Falls Insurance Company
- Globe District Court
- Glover, James Benton
- Godfrey, Edward
- Gold Boulder Mining Company
- Gold Star Mothers
- Gold, Frank
- Gold, Vic
- Goldbaum, Julius
- Goldberg Family
- Goldman, Adolph
- Goldwater, Barry
- Goldwater, Joseph
- Gonzales, Nazario
- Goodale, Roy
- Goodfellow, George
- Goodnight Collection
- Goodwin, Francis H.
- Goodwin, Grenville
- Goodwin, John N.
- Gosnell, Robert
- Gould Copper Mining Company
- Goyette, C. Edgar and Cornelia R.
- Graham County Historical Society
- Graham County Justice Court
- Grand Army of the Republic
- Granjon, Henry
- Grant, William
- Gray, Andrew B.
- Gray, John Plesent
- Great Ray Copper Company
- Green, Francis
- Green, George W.
- Greene Cananea Copper Company
- Greenway Family
- Greenway, John and Isabella
- Gregory, Leslie
- Griffen,William B.
- Griffin, William H.
- Grimes, Austin
- Grimwhaw, Henry
- Grosetta Family
- Grosse, Garnet Davy
- Groton, Howard Carroll
- Grunewald, Abbey
- Guernsey, Sam
- Gusemeri, Florence
- Guthrie, Donald Quinlan
- Guthrie, James
