Sheikh Omar Abdel-Rahman (, ‘ Umar ‘ Abd ar-Raḥman ; born 3 May 1938 ), commonly known in the United States as " The Blind Sheikh ", is a blind Egyptian Muslim leader who is currently serving a life sentence at the Butner Medical Center which is part of the Butner Federal Correctional Institution in Butner, North Carolina, United States.

Omar ( also spelled Omer or Umar ) (, ) () can refer to:

Badi ' al-Zaman Abū al -' Izz ibn Ismā ' īl ibn al-Razāz al-Jazarī ( 1136 – 1206 ) (, ) was an Arab or a Kurdish Muslim polymath: a scholar, inventor, mechanical engineer, craftsman, artist, and mathematician from Jazirat ibn Umar ( current Cizre ), who lived during the Islamic Golden Age ( Middle Ages ).

Bangladesher Samyabadi Dal ( Marxbadi-Leninbadi ) (, Communist Party of Bangladesh ( Marxist-Leninist )) is a political party in Bangladesh led by Badruddin Umar.

Abu Qatada al-Filistini (, ’ Abū Qatāda al-Filisṭīnī ; born 1959 / 60 ), is the conventional name of Omar Mahmoud Othman ( ‘ Umar ibn Maḥmūd ibn ‘ Uṯmān ), a Palestinian Muslim of Jordanian citizenship.

* Yahya ibn Umar al-Lamtuni ( c. 1050-1056 )

* Pact of Umar ( c. 717 AD ), an edict of the caliph Umar ibn AbdulAziz concerning dhimmi

* Omar Tiberiades ( Abû Hafs ' Umar ibn al-Farrukhân al-Tabarî ) ( d. c. 815 ), Persian astrologer and architect

Ḥafsah bint ‘ Umar (; born c. 609-was the daughter of Umar ( Umar ibn al-Khattab ) and wife of the Islamic prophet Muhammad, and therefore a Mother of the Believers.

Rashid ben Thabit ben Mandil asked for help to Marinid dynasty of Morocco ( 1295 ), but the emirate was assigned to Umar ben Waghram ben Mandil ( c. 1299-13002 ).

* Umar Lel ruled until c. 1752 / 3 ( c. AH 1166 )

The Pact ( Covenant ) of Umar ( c. 717 AD ) was a treaty supposedly made between the Umayyad caliph Umar II ( not to be confused with the second caliph Umar who had made the first treaty with Christians in Jerusalem known as " Umari Treaty ") and the ahl al-kitab ( اهل الكتاب ) (" People of the Book ") living on the land conquered.

El Hadj Umar ibn Sa ' id Tall (), ( c. 1797 – 1864 ), born in what is now Senegal was a West African political leader, Islamic scholar, and Toucouleur military commander who founded a brief empire encompassing much of what is now Guinea, Senegal, and Mali.

Tidiani Tall ( b. c. 1840 died 1888 ) succeeded his uncle, El Hadj Umar Tall, as head of the Toucouleur Empire following Umar's 1864 death near Bandiagara.

c. 1780-1800 ` Umar ibn Salih Al Harhara

c. 1800-1810 Qahtan ibn ` Umar ibn Salih Al Harhara

c. 1810-1815 ` Umar ibn Qahtan ibn ` Umar Al Harhara

c. 1815-1840 Qahtan ibn ` Umar ibn Qahtan Al Harhara

Probably sensing the useful organizing power of Ibn Yasin's pious fervor, he was invited by the Lamtuna chieftain Yahya ibn Umar al-Lamtuni to preach to his people.

In the early 1050s, the Lamtuna, under the joint leadership of Yahya ibn Umar and Abdallah ibn Yasin-soon calling themselves the al-Murabitin ( Almoravids )-set out on campaign to bring their neighbors over to their cause.

Yahya ibn Umar was killed in a battle in 1057, but Abdullah ibn Yasin, whose influence as a religious teacher was paramount, named his brother Abu Bakr ibn Umar as chief.

They were, however, completely conquered by Abu Bakr ibn Umar, and adopted Islam as a religion.

In 1061, Abu Bakr ibn Umar made a division of the power he had established, handing over the more-settled parts to his cousin Yusuf ibn Tashfin, as viceroy, resigning to him also his favourite wife Zainab.

The Almoravids ' first military leader, Yahya ibn Umar al-Lamtuni, gave them a good military organization.

* Abu Bakr ibn Umar ( 1056 – 1087 )-partitioned reign from 1072.

And Umar ibn Khattab had embraced Islam after forty-five men and twenty-one women.

Another example is when a few passengers and flight attendants teamed up to subdue Umar Farouk Abdulmutallab who attempted to detonate explosives sewn into his underwear aboard Northwest Flight 253 on December 25, 2009.

Al-Mutarrif had accused Muhammad of plotting with the rebel Umar ibn Hafsun, and Muhammad had been imprisoned.

The most powerful of the latter was Umar ibn Hafsun, who, from his impregnable fortress of Bobastro, controlled much of eastern Al-Andalus.

He first had to suppress the rebel Umar ibn Hafsun.

The city was sacked by the Samaritans in 529, but rebuilt by the Byzantine emperor Justinian I. Bethlehem was conquered by the Arab Caliphate of ' Umar ibn al-Khattāb in 637, who guaranteed safety for the city's religious shrines.

In 637, shortly after Jerusalem was captured by the Muslim armies, ' Umar ibn al-Khattāb, the second Caliph, promised that the Church of the Nativity would be preserved for Christian use.

A mosque dedicated to Umar was built upon the place in the city where he prayed, next to the church.

Umar Sheikh Mirza – Father of Babur, ca. 1875 – 1900

Finally, around 1396 the Bulala invaders forced Mai Umar Idrismi to abandon Njimi and move the Kanembu people to Bornu on the western edge of Lake Chad.

In the Middle Ages, the Caliphate began conducting regular censuses soon after its formation, beginning with the one ordered by the second Rashidun caliph, Umar.

The first four Caliphs: Abu Bakr as-Siddiq, Umar ibn al-Khattab, Uthman ibn Affan and Ali ibn Abi Talib are commonly known by Sunnis, mainly, as the Khulafā ’ ur-Rāshideen (" rightly guided successors ") Caliphs.

On his deathbed, Abu Bakr appointed Umar as his successor without an election by the community of Believers.

The oath, approving the appointment of Umar, was taken only by the Companions present in Medina at the time.

This led to certain groups disputing the authority of Umar.

An early expedition to Derbent was ordered by the Caliph Umar ( 586 – 644 AD ) himself, during the Arab conquest of Armenia where they heard about Alexander's Wall in Derbent from the conquered Christian Armenians.