| FLAG |
NAME |
ARTIST |
GAME(S) |
NOTES |
 |
Obernai |
Doc Taxon |
Colonial Aeon | Dynastic Investor | Merchant Adventurer |
Decapole city from 1354 to 1679. |
 |
Obotritia |
OwenBlacker |
Dynastic Investor | Merchant Adventurer |
Confederation from the 8th century to 1167. |
 |
Obu |
tokitoshi |
Colonial Aeon | Merchant Adventurer |
Samurai clan in the 16th century. |
 |
Oda |
Gilyellows |
Colonial Aeon | Fallen Flags | Merchant Adventurer |
Samurai clan from the 13th century to 1871. |
 |
Offenburg |
Rayan54 |
Colonial Aeon | Dynastic Investor | Fallen Flags | Merchant Adventurer |
Free imperial city from before 1240 to 1803. |
 |
Ogasawara |
Mangwanani |
Colonial Aeon | Dynastic Investor | Merchant Adventurer |
Samurai clan from the 13th to 19th centuries. |
 |
Okubo |
MChew |
Colonial Aeon | Merchant Adventurer |
Samurai clan from the 15th century to 1873. |
 |
Okudaira |
Emmanuel Evalerio |
Colonial Aeon | Merchant Adventurer |
Samurai clan from the 15th to 16th centuries. |
 |
Oldenburg |
Éduarel |
Colonial Aeon | Dynastic Investor | Fallen Flags | Merchant Adventurer |
County, duchy, grand duchy, and free state from 1108 to contemporary times. |
 |
Olesnica |
Schläsinger |
Colonial Aeon | Fallen Flags | Merchant Adventurer |
Duchy from 1313 to 1884. |
 |
Oman |
Sir Iain |
Colonial Aeon | Dynastic Investor | Fallen Flags | Merchant Adventurer |
Inamate from 749 to contemporary times. |
 |
Ono |
Emmanuel Evalerio |
Colonial Aeon | Dynastic Investor | Merchant Adventurer |
Samurai clan from the early 7th to c.11th centuries. |
 |
Opole |
Poznaniak |
Colonial Aeon | Dynastic Investor | Merchant Adventurer |
Duchy from 1172 to 1532. |
 |
Oppland |
? |
Dynastic Investor | Merchant Adventurer |
Kingdom from the c.7th to c.8th centuries. Possibly rebelled against Norway in the late 9th and or early 10th centuries. |
 |
Orange |
Sodacan |
Colonial Aeon | Dynastic Investor | Merchant Adventurer |
Principality from 1163 to 1713. Took part in the Mad War as rebels. |
 |
Orchha |
Germenfer |
Colonial Aeon | Fallen Flags | Merchant Adventurer |
Princely state from 1531 to contemporary times. |
 |
Organa |
Eugene Ipavec |
Merchant Adventurer |
Possible kingdom in the 14th century. |
 |
Ormus |
RETFrog |
Colonial Aeon | Dynastic Investor | Merchant Adventurer |
Kingdom from the 11th century to 1622. |
 |
Osnabruck |
Ben Cahoon |
Colonial Aeon | Dynastic Investor | Fallen Flags | Merchant Adventurer |
Hanseatic city from the 12th century to c.1669. Prince bishopric from 1225 to 1803. |
 |
Osraige |
? |
Ancient Economy | Colonial Aeon | Dynastic Investor | Merchant Adventurer |
Kingdom from 150 to 1541. |
 |
Osterburg |
Klaus-Michael Schneider |
Colonial Aeon | Merchant Adventurer |
Hanseatic city from 1359 to c.1669. |
 |
Ostergotland |
Ooland123 |
Ancient Economy | Colonial Aeon | Dynastic Investor | Merchant Adventurer |
Kingdom from the c.6th century to at least the 12th century. Took part in the Dacke War as rebels. |
 |
Otani |
高城祥希 |
Colonial Aeon | Merchant Adventurer |
Samurai clan from the 16th to 17th centuries. |
 |
Othama |
Node ue |
Colonial Aeon | Fallen Flags | Merchant Adventurer |
Tribal people from prehistoric to contemporary times. |
 |
Otomi |
Marrovi |
Colonial Aeon | Fallen Flags | Merchant Adventurer |
Kingdom from c.1100 to the 13th century and tribal people to contemporary times. |
 |
Otomo |
Mukai |
Colonial Aeon | Dynastic Investor | Merchant Adventurer |
Samurai clan from the 12th to 17th centuries. |
 |
Ottoman |
BlinxTheKitty |
Merchant Adventurer |
Empire from c.1299 to 1922. |
 |
Ottoman |
JDKönig |
Colonial Aeon |
Empire from c.1299 to 1922. |
 |
Ottoman |
Медун 1876 |
Fallen Flags |
Empire from c.1299 to 1922. |
 |
Ouchi |
Mukai |
Colonial Aeon | Dynastic Investor | Merchant Adventurer |
Samurai clan from the 12th century to 1557. |
 |
Oxford |
Wdgwdgwdg |
Colonial Aeon | Merchant Adventurer |
Took part in the First Barons' War and the Wars of the Roses as rebels. |
 |
Oyo |
Chrkl |
Colonial Aeon | Fallen Flags | Merchant Adventurer |
Empire from c.1300 to 1896. |