Ummah (Arabic: أمة‎) is an Arabic word meaning "community" or "nation." It is commonly used to mean either the collective nation of states, or (in the context of pan-Arabism) the whole Arab world. In the context of Pan-Islamism, the word ummah is used to mean the diaspora^{[citation needed]} or Commonwealth^{[citation needed]} of the Believers (ummat al-mu'minin), and thus the whole Muslim world.

The phrase Ummah Wahida in the Qur'an (the "One Community") refers to all of the Islamic world unified. The Quran says: “You [Muslims] are the best nation brought out for Mankind, commanding what is righteous (Ma'ruf, lit. "recognized [as good]") and forbidding what is wrong (Munkar, lit. "unrecognized [as good]")…” [3:110].

On the other hand, in Arabic Ummah can also be used in the more Western sense of nation, for example: Al-Umam Al-Muttahida, the United Nations.

The Constitution of Medina, an early document said to have been negotiated by Muhammad in AD 622 with the leading clans of Medina, explicitly refers to Jewish and pagan citizens of Medina as members of the Ummah.

The Ummah was a music production collective, composed of members Q-Tip and Ali Shaheed Muhammad of A Tribe Called Quest, and the late Jay Dee (now known as J Dilla) of the Detroit-based group Slum Village. Occasional members included Raphael Saadiq, and D'Angelo. In addition to producing nearly the entirety of A Tribe Called Quest's fourth and fifth album, the Ummah provided backing tracks for a notable array of hip hop and contemporary R&B artists, including Busta Rhymes, Whitney Houston, Keith Murray, the Brand New Heavies, Janet Jackson, and Jon B. The group was so named because two of its members (Tip and Ali) are devout Muslims. The word "ummah" is Arabic for "community", "nation", or "brotherhood".

The collective took shape around 1995, when veteran keyboardist Amp Fiddler introduced Jay Dee (who at the time was shopping for a deal for his group) to Q-Tip. Tip was impressed enough by Jay Dee's soulful productions to invite him as an addition to Tribe's music-production team, which until then consisted of Tip and Ali Shaheed.

Sami Yusuf is a British singer-songwriter, composer, producer and multi-instrumentalist musician of Azerbaijan origin.

In 2003 Yusuf released his first album "Al-Mu`allim" at the age of 23, selling over two million copies. Following the release of his second album "My Ummah" in 2005, Yusuf was heralded as "Islam's Biggest Rock Star" by Time magazine for his success in attracting a relatively young fan base from diverse regions across the world, many of whom were of Muslim backgrounds. Yusuf has sold over 9 million albums. In October 2010, following a five-year hiatus, Yusuf’s third official album "Wherever You Are" was launched, manifesting his self-coined genre “Spiritique”. Yusuf is involved in humanitarian initiatives, supporting, among others, Islamic Relief and Save the Children.