| Ka'ba: The most holy structure in Islam situated in Mecca. Centre of the world according to Islam. |
| Kabylia: Mountain area in northeastern Algeria, equalling a stretch of about 200 km. |
| Kairouan: City in Tunisia with 150,000 inhabitants, situated inland in the northern part of Tunisia. |
| Karaj: City in Iran with 940,000 inhabitants, in the Teheran Province. |
| Karbala: City in Iraq with 550,000 inhabitants, situated about 50 km southeast of Baghdad. |
| Karun: River of Iran, with its source in the Zagros Mountains. |
| Kasbah: Traditional fortress and palace of towns in pre-colonial North Africa. |
| Kemal, Mustafa: Founder of the modern republic of Turkey. |
| Kenitra: City in Morocco with 580,000 inhabitants, situated in the northwestern part of the country. |
| Kermanshah: City in Iran with 690,000 inhabitants. |
| Khaled: Algerian musician and singer. |
| Khalil, Al: City in Palestine with about 110,000 inhabitants. |
| Kharijis: The smallest of the three orientations in Islam, today counting for less than 1% of all Muslims. |
| Khartoum: Capital of Sudan with 1,2 million inhabitants. |
| Khayyam, Omar: Persian mathematician and poet. |
| Khomeini, Ayatullah: Iranian religious leader and politician. |
| Khufu: Egyptian Pharaoh reigning in the 26th century BCE, being the 2nd ruler in the 4th dynasty. |
| Khutba: A central sermon in Islam, performed with the midday prayer in the mosque on Friday. |
| Kiddush: Jewish praise used in the home, and in the synagogues, as a start of the sabbath and of holidays. |
| Kippah: Skullcap worn by Jews during prayer. |
| Knesset: From Hebrew, meaning 'assembly'. The parliament of Israel, located to Jerusalem. |
| Konya: City in central Turkey with 600,000 inhabitants. |
| Koran: The holy book of Islam. Also referred to in English as "Quran", or "Qur'an". |
| Kosher: Jewish rules for what is ritually acceptable. |
| Kufra: Group of oases in southeastern Libya, with a population of about 10,000. |
| Kurds: People living in a landscape called Kurdistan. |
| Kuwait: Independent monarchy, divided into 5 governorates, bordering southeastern Iraq northeastern Saudi Arabia. |
| Kuwait City: Capital of Kuwait with 900,000 inhabitants. |
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