Fourth Crusade

First Crusade | Second Crusade | Third Crusade | Fourth Crusade | Albigensian Crusade | Fifth Crusade | Sixth Crusade | Barons Crusade | Seventh Crusade | Eighth Crusade | Lord Edward's Crusade | Savoyard Crusade | Nicopolis Crusade |

<gallery caption="Crusaders" align=center style= "color: #292929;font-size:1.2em;font-weight: normal;text-align:center;font-style: normal; border-bottom:solid 0px #efeeed;"> Aleramici.svg|Boniface of Montferrat †
Marquis of Montferrat Dandolo.svg|Enrico Dandolo †
Doge of Venice Champagne.svg|Theobald III of Champagne
Count of Champagne Flandern.svg|Baldwin of Flanders †
Count of Flanders
Count of Hainaut Louis_de_Blois.svg|Louis of Blois †
Count of Blois Hugues_IV_de_Saint-Pol.svg|Hugh IV of Saint-Pol †
Count of Saint-Pol Geoffrey I Villehardouin.svg|Geoffrey de Villehardouin
Lord of Villehardouin and Lézinnes
Marshall of Champagne Blank.svg|Machaire de Sainte-Menehould
Lord of Sainte-Menehould Breban.svg|Milon de Breban
Lord of Provins De_Perche.svg|Étienne du Perche †
Killed at Adrianopol 1205 Montmirail-Sarthe.svg| Renaud de Montmirail †
Lord of Montmirail
Killed at Adrianopol 1205 Anselme_de_Cayeux.svg| Anselme de Cayeux Cono van Béthune.svg|Conon de Béthune Thierry_de_Los.svg|Thierry de Loos
Seneschal of Romania
1204–1206
Duke of Nicomedia Thierry_de_Los.svg|Guillaume de Loos †
Killed at Rusion 1206 De_Termonde.svg|Thierry de Termonde †
Killed at Rusion 1206 Trith.svg| Rénier de Trith
Duke of Philippopolis
1204–1208 Mailly.svg|Nicolas de Mailly
Lord of Mally Blank.svg|Conrad of Krosigk
Bishop of Halberstadt Blank.svg|Martin
Abbot of Pairis