Barons | Titles by Rank
- Barons Czobor de Czoborszentmihály
- Barons Darcy de Knayth
- Barons Davout d' Auerstaedt
- Barons Decies
- Barons Deedes
- Barons della Faille d' Huysee van den Hecke de Lembeke
- Barons della Faille d' Huysse
- Barons della Nicchiara
- Barons della Rocca
- Barons della Sala di Paruta
- Barons della Scala
- Barons Delvin
- Barons Denton
- Barons Dersffy
- Barons Dersffy de Szerdahely
- Barons Desandré
- Barons Descantons de Montblanc
- Barons Digby
- Barons Dimsdale
- Barons Dingwall
- Barons Dirckinck-Holmfeld
- Barons Dobrzensky
- Barons Dobrzensky de Dobrzenicz
- Barons Dóczy de Nemet-Keresztur
- Barons Donington
- Barons dos Cataguases
- Barons dos Fiães
- Barons dos Fiães-I
- Barons Drasche von Wartinberg
- Barons Draskovich de Trakostyán
- Barons Droste zu Vischering
- Barons Dudevant
- Barons Dudley
- Barons Dunira
- Barons Durand de Fontmagne
- Barons Durrieu
- Barons Ebergenyi
- Barons Economo di San Serff
- Barons Economo von San Serff
- Barons Eddisbury
- Barons Empain
- Barons Eschasseriaux
- Barons Esterházy
- Barons Evain Pavée de Vendeuvre
- Barons Exmouth
- Barons Eyrl von Waldgries und Liebenaich
- Barons Fairfax
- Barons Fairfax of Cameron
- Barons Fallon
- Barons Fanhope