Arabic is the sole official language of Oman, spoken by the entire Omani Arab population and used in all government functions, education from primary through university levels, legal proceedings, and official documentation. The dialect spoken across most of Oman is a variant of Gulf Arabic, though phonologically and lexically distinct enough from Emirati or Kuwaiti dialects to be immediately identifiable. In Muscat and the coastal cities of the Batinah region including Sohar and Seeb, the urban Gulf Arabic dialect dominates commercial interactions, government offices, and service industries. The Sultan Qaboos Grand Mosque in Muscat conducts all religious instruction and Friday sermons exclusively in Modern Standard Arabic, the liturgical and formal register taught in schools but rarely used in daily conversation.
The Dhofar Region, centered on Salalah, maintains several indigenous South Arabian languages that predate the spread of Arabic across the peninsula. Jibbali, also called Shehri, is spoken by communities in the mountains and coastal areas of Dhofar, with approximately 25,000 speakers as of recent linguistic surveys. Mehri, spoken by roughly 10,000 people in eastern Dhofar near the border with Yemen, belongs to the same Modern South Arabian language family. Bathari, spoken by fewer than 100 individuals in central Dhofar, faces imminent extinction. Hobyot, with approximately 1,000 speakers in the western Dhofar mountains near the Yemen border, remains undocumented in any comprehensive grammar. These languages bear no mutual intelligibility with Arabic; they descend from a separate Semitic branch and preserve phonological features including lateral fricatives absent from Arabic. At the Salalah souq and in Dhofar government offices, Arabic serves as the lingua franca, but inland villages in Jebel Samhan and the areas surrounding Wadi Darbat conduct daily life in Jibbali or Mehri.
Balochi, spoken by Oman's substantial Baloch population descended from 19th and 20th century migration from Balochistan, functions as a community language in Muscat neighborhoods including Ruwi and Mutrah, and in smaller concentrations in Sur and Sohar. The Baloch community in Oman numbers approximately 300,000 to 400,000, though census data does not disaggregate ethnicity in published form. Balochi exists in two main dialectal forms in Oman—Eastern Balochi from Pakistani Balochistan and Southern Balochi from coastal Makran. The Mutrah Souq contains shop owners who switch seamlessly between Arabic for Omani customers and Balochi for community members, but all written signage appears in Arabic. Schools in Oman do not offer Balochi instruction, and language transmission occurs entirely within families and community settings.
Swahili maintains a presence in Muscat and coastal areas through the historical connection between Oman and Zanzibar, which remained under Omani rule until 1964. Sultan Majid bin Said moved the capital of the Omani Empire to Zanzibar in 1832, establishing a two-century connection that brought East African cultural and linguistic elements to Oman. Elderly Omanis of mixed Afro-Arab heritage, particularly in the Mutrah and Ruwi districts of Muscat, speak Swahili at home, though the language no longer transmits reliably to younger generations. The Bait Al Zubair Museum in Muscat documents this heritage but does not maintain Swahili as a working language. Approximately 10,000 to 15,000 Omanis possess receptive competence in Swahili, concentrated among those over 60 years old.
English functions as the primary foreign language taught in Omani schools from grade one onward, following a 1998 education reform under Sultan Qaboos. In Muscat, particularly in the commercial districts of Al Khuwair and Qurum, English appears on approximately 40 percent of commercial signage, often alongside Arabic. The Royal Opera House Muscat conducts performances in multiple languages but posts all program notes in both Arabic and English. Sultan Qaboos University in Muscat, established in 1986, delivers undergraduate instruction in English for engineering, medicine, and science programs, while humanities and Islamic studies courses use Arabic. The Muscat Souq stallholders speak functional English for price negotiation and basic transaction vocabulary. Hotels in Muscat, Salalah, and Nizwa employ staff with conversational to fluent English, as the tourism sector expanded significantly after 2000 with government investment in heritage site development.
Outside Muscat, English competence drops substantially. In Nizwa, the historic interior capital and home to Nizwa Fort, shopkeepers at the traditional souq speak minimal English—enough for numbers and basic greetings, insufficient for complex questions about product origins or preparation methods. The Friday livestock market in Nizwa, which draws rural Omanis from surrounding villages in the Al Hajar Mountains, operates entirely in Arabic. At Bahla Fort, the UNESCO World Heritage site 40 kilometers from Nizwa, the ticket counter staff speak English adequate for admission transactions, but interpretive materials inside the fort appear only in Arabic. Salalah, despite its importance as Oman's second city and the center of the annual Khareef monsoon tourism season from June to September, maintains lower English proficiency than Muscat. Hotels in Salalah employ English-speaking reception staff, but restaurants outside the tourist zone along the beach road function in Arabic only.
The Musandam Peninsula, separated from the rest of Oman by the United Arab Emirates and accessible by air through Khasab or by road through UAE territory, presents distinct linguistic features. Kumzari, a language isolate with Persian, Arabic, and Indian linguistic elements, is spoken by approximately 4,000 people in the Kumzar village at the northern tip of the peninsula. The village, accessible only by boat until a road was completed in 2008, maintains Kumzari as the primary home language, though Arabic serves for all external communication. In Khasab, the regional administrative center, Arabic dominates, with English present in hotels catering to tourists visiting for dhow cruises through the Strait of Hormuz. The Musandam Governorate's small population—roughly 40,000 across the entire peninsula—limits commercial language diversity.
Urdu and Hindi function as community languages among the South Asian expatriate population in Oman, which comprises approximately 700,000 individuals from India, Pakistan, and Bangladesh combined. In Ruwi, Muscat's commercial center, shop signs for electronics, textiles, and money transfer services display Urdu or Hindi alongside Arabic. The Mohammed Al Ameen Mosque in Ruwi conducts some Friday services in Urdu to serve the Pakistani community. Restaurants serving South Asian cuisine in the Darsait and Wadi Kabir neighborhoods of Muscat operate in Hindi or Urdu among staff, switching to English or Arabic for Omani customers. These languages exist in commercial and community spheres but hold no official recognition and do not appear in government services.
Farsi, the Persian language, appears in Oman through historical trade connections across the Strait of Hormuz and contemporary Iranian business presence in Muscat. The Muttrah Souq includes merchants whose families originated in Persia during the 19th century, when Oman controlled ports along the Persian coast. Some elderly Omanis in Muscat maintain conversational Farsi, particularly in families with Persian ancestry, but this represents a minor percentage. Iranian businesses in Muscat's Qurum commercial area use Farsi internally but Arabic or English for customer interaction.
French maintains minimal presence in Oman outside the expatriate French community and French companies operating in the petroleum sector. The Total facility in Duqm, part of the Special Economic Zone developed since 2011, employs French nationals who work in French internally but use English for cross-company communication. Muscat's international schools include French curriculum options, but French does not appear in street signage or commercial contexts beyond French bakeries in affluent Muscat neighborhoods like Al Mouj.
In the Wahiba Sands, also called Sharqiya Sands, where Bedouin communities have maintained traditional desert lifestyles, Arabic remains the exclusive language. The Bedouin dialect differs phonologically from urban Muscat Arabic, with distinct vocabulary for camel husbandry, desert navigation, and traditional material culture. Desert camps in Wahiba Sands that host tourists employ guides with basic English for explaining desert ecology and Bedouin traditions, but camp staff from Bedouin families speak Arabic as their sole fluent language.