General chronologies

Brief chronology of Muslim history (Muslim Students Association, USC)

Chronology of Islam (barkati.net)

Islamic timeline 

The Rise and Fall of the Islamic Empire (CAABU)

The Arab World in the Twentieth Century (CAABU)

Chronology of Middle Eastern politics from 1908 to 1966 (middleeastreference.org.uk)

Chronology of Middle Eastern politics from 1967 to 1990 (middleeastreference.org.uk)

Chronology of Middle Eastern politics since 1991 (middleeastreference.org.uk)

Organisation of the Islamic Conference
Chronology of key events (BBC)

Arab League
Chronology of key events (BBC)

Arab-Israeli conflict

Israel and the Middle East 
Key events since 1881 (Guardian)

Timeline of Palestinian-Israeli history 
From earliest times to the present day (mideastweb.org)

Israel and Palestine timeline 
Events since 1999 (Guardian)

Chronology of bomb attacks against Israelis  
Since 2000 (BBC)

Chronology of Arab countries

Algeria
Chronology of key events (BBC)

Bahrain
Chronology of key events (BBC)

Comoros 
Chronology of key events (BBC)

Djibouti 
Chronology of key events (BBC)

Egypt
Chronology of key events (BBC)

Egypt: Suez crisis 1956  
(Yahia al Shaer)

Egypt: the Suez canal since 609 BC 
(napoleon.org)

Iraq
Chronology of key events (BBC)

Iraq: the "War of Sanctions" 
A detailed day-by-day chronology of the UN and US confrontation with Iraq since the cease-fire in 1991. Updated to December 2, 1998. Large PDF file. (Center for Strategic & International Studies)

Iraqi Kurds
Chronology of key events (BBC)

Jordan
Chronology of key events (BBC)

Kuwait 
Chronology of key events (BBC)

Lebanon
Chronology of key events (BBC)

Libya
Chronology of key events (BBC)

Mauritania 
Chronology of key events (BBC)

Morocco 
Chronology of key events (BBC)

Morocco: key dates 
Detailed chronology from the Moroccan government website

Morocco chronology  
(Focus Multimedia)

Qatar 
Chronology of key events (BBC)

Saudi Arabia
Chronology of key events (BBC)

Syria
Chronology of key events (BBC)

Sudan
Chronology of key events (BBC)

United Arab Emirates
Chronology of key events (BBC)

Yemen
Chronology of key events (BBC)