Below is a listing of aliases used by Neal Caffrey.
- Nicholas "Nick" Halden: Gambler, Money Launderer (e.g. All In, Front Man, Prisoner's Dilemma)
- Neal Armstrong: Con man (Parting Shots)
- Neal Bennett: Birth name
- Danny Brooks: Name in WitSec
- James Bonds: FBI case file nickname (Forging Bonds)
- Neal Caffrey: Mother's maiden name
- Benjamin Cooper:Political Fixer (Need to Know)
- George Danvary: Business Man, Embezzler (Out of the Box)
- George Donnelly: Gem/Antiquities Dealer, Treasure Hunter (What Happens in Burma)
- George Devore: Art Collector, Art Forger, Fence (The Portrait)
- Chris Gates: Interpol Art Crimes Division (Where There's a Will, Countdown)
- William Grey: Architect (Brass Tacks)
- Dr. Leonard Parker: Doctor (Vital Signs)
- James Maine: (Wanted, Most Wanted)
- Victor Moreau (Scott Free)
- Nicholas Monroe
- Gary Rydell: Playboy, Fencer, Smuggler (On Guard)
- Steve Tabernacle: International Playboy, Jet-setter, Investment Fraudster[1] (mentioned in All In, Forging Bonds)
- Frank Wellington Jr.: Fictional son of Frank Wellington (Burke's Seven)
- Rhett Carlyle: Butler (Master Plan)
- Mr. Wilcox (Controlling Interest)
- Nathaniel Dietrick: Son of Wealthy Reclusive Southern California Family (Return to Sender)