Flag |
Date |
Use |
Description
|
![](https://upload.wikimedia.org/wikipedia/commons/thumb/f/fc/Derafsh_Kaviani_flag_of_the_late_Sassanid_Empire.svg/150px-Derafsh_Kaviani_flag_of_the_late_Sassanid_Empire.svg.png) |
225–632 |
Standard of the Sasanian Empire |
|
![](https://upload.wikimedia.org/wikipedia/commons/thumb/3/39/White_flag_3_to_2.svg/150px-White_flag_3_to_2.svg.png) |
661-750 |
Flag of The Umayyad Caliphate |
A Simple White Field.
|
![](https://upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Abbasid_banner.svg/150px-Abbasid_banner.svg.png) |
750-934 |
Flag of The Abbasid Caliphate |
A Simple Black Field.
|
![](https://upload.wikimedia.org/wikipedia/commons/thumb/9/91/Flag_of_the_Seljuk.png/150px-Flag_of_the_Seljuk.png) |
1045-1154 |
Flag of The Seljuk Empire |
|
![](https://upload.wikimedia.org/wikipedia/commons/thumb/7/7a/Flag_of_Portugal_%281495%29.svg/150px-Flag_of_Portugal_%281495%29.svg.png) |
1508-1521 |
Flag of The Kingdom of Portugal |
A White Field with The Portuguese Coat of Arms in the Center.
|
![](https://upload.wikimedia.org/wikipedia/commons/thumb/3/36/Flag_of_Portugal_%281521%29.svg/150px-Flag_of_Portugal_%281521%29.svg.png) |
1521–1578 |
Flag of The Kingdom of Portugal |
A White Field with The Portuguese Coat of Arms in the Center.
|
![](https://upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Flag_of_Portugal_%281578%29.svg/150px-Flag_of_Portugal_%281578%29.svg.png) |
1578–1640 |
Flag of The Kingdom of Portugal |
A White Field with The Portuguese Coat of Arms in the Center.
|
![](https://upload.wikimedia.org/wikipedia/commons/thumb/8/87/Flag_of_Portugal_%281616%29.svg/150px-Flag_of_Portugal_%281616%29.svg.png) |
1616–1640 |
Flag of The Kingdom of Portugal (Putative Flag) |
A White Field with The Portuguese Coat of Arms in the Center.
|
![](https://upload.wikimedia.org/wikipedia/commons/thumb/7/72/Flag_of_Portugal_%281640%29.svg/150px-Flag_of_Portugal_%281640%29.svg.png) |
1640-1650 |
Flag of The Kingdom of Portugal |
A White Field with The Portuguese Coat of Arms in the Center.
|
![](https://upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Flag_of_The_Imamate_of_Oman.svg/150px-Flag_of_The_Imamate_of_Oman.svg.png) |
1650-1954 |
Flag of the Imamate of Oman |
A White Field with The Royal Emblem in the canton.
|
![](https://upload.wikimedia.org/wikipedia/commons/thumb/6/60/Flag_of_the_Omani_Empire.svg/150px-Flag_of_the_Omani_Empire.svg.png) |
1696–1856 |
Flag of the Omani Empire |
A White Field with red arabic script above and a red sword pointed to the right.
|
![](https://upload.wikimedia.org/wikipedia/commons/thumb/6/6f/Flag_of_Muscat.svg/150px-Flag_of_Muscat.svg.png) |
1856-1970 |
Flag of the Sultanate of Muscat and Oman |
A Simple Red Field.
|
![](https://upload.wikimedia.org/wikipedia/commons/thumb/4/45/WhiteFlag.png/150px-WhiteFlag.png) |
1868-1871 |
Flag of the Imamate of Muscat and Oman |
A Simple White Field.[8]
|
![](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a7/Flag_of_Oman_%281954%E2%80%931959%29.svg/150px-Flag_of_Oman_%281954%E2%80%931959%29.svg.png) |
1954-1959 |
Flag of the Imamate of Oman |
A White Field with red arabic script and a red sword pointed to the right above.[9]
|
![](https://upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Flag_of_Oman_%281970%E2%80%931995%29.svg/150px-Flag_of_Oman_%281970%E2%80%931995%29.svg.png) |
1970-1985 |
Flag of Oman |
A horizontal tricolor of white, red and green; with a vertical red stripe at the hoist, charged with the National emblem of Oman, the red stripe is smaller than the other ones.[10][11]
|
![](https://upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Flag_of_Oman_%283-2%29.svg/150px-Flag_of_Oman_%283-2%29.svg.png) |
1985-1995 |
Flag of Oman |
A horizontal tricolor of white, red and green; with a vertical red stripe at the hoist, charged with the National emblem of Oman (Proportion of 3:2).[12]
|