#toponym

• Abovian — A proper name of Armenian origin used both as a family name and a geographical designation; (toponym) a major industrial city in Armenia located in the Kotayk Province, considered an important satellite to the capital Yerevan; (anthroponym) a famous surname, most notably borne by Khachatur Abovian (1805–1848), an Armenian writer, democratic enlightener, ethnographer, and the father of modern Armenian literature.
• Abradu (historical proper name) — An extremely rare historical Romanian anthroponym recorded in traditional onomastics and specialized dictionaries; (in history) a form derived through contamination or phonetic variation from the proper name Abrud or associated with the root 'Bradu'; (toponym) a name historically documented in connection with certain ruins or ancient settlements in the Oltenia region, verified in archival linguistic sources.
• Abram — A proper name with deep biblical and historical roots; (anthroponym) the original, Hebrew form of the patriarch Abraham's name (meaning 'exalted father'), used before the divinity changed his name to Abraham ('father of a multitude'); as a first or last name, it is frequently found internationally and sporadically in Romania; (toponym) the name of a commune in Bihor County, Romania, as well as its main residency village.
• Abrămuț — A locality (village) situated in the northern part of Bihor County, Crișana region, Romania; it served as the administrative center of the commune of the same name until the administrative unit was officially renamed Petreu.
• Abrud — A town in Alba County, Transylvania, Romania, located in the Abrud Depression within the Apuseni Mountains, on the river of the same name; it is an ancient mining center known since the Roman era as Abruttus, closely tied to gold extraction and historical events like the Revolt of Horea, Cloșca, and Crișan and the 1848 Revolution.
• Abruzzi — A historical and alternative plural name previously used for the current Abruzzo administrative region in central Italy, located east of Rome, between the Apennine Mountains and the Adriatic coast; it is renowned for its vast national parks, the Gran Sasso mountain massif, and its untouched medieval heritage.
• Acadia — An atypical, hypercorrect, or erroneous spelling variant of the historical toponym 'Acadia' (a colonial region in eastern Canada and northern Maine). In older Romanian texts, the double 'i' spelling occasionally reflected an attempt to faithfully render the phonetics of the final hiatus during articulation or an early adaptation of the name from Cyrillic sources. In modern linguistic context, this form is considered a departure from the official literary standard, with 'Acadia' being the exclusively accepted term for designating that early francophone province.
• Acapulco — A famous port city and world-renowned resort town located in the Mexican state of Guerrero, along the Pacific Ocean coast. Situated in a spectacular semicircular bay, it is historically celebrated for its vibrant nightlife, tropical beaches, and the legendary cliff diving shows at La Quebrada, while also holding great historical significance as a major Spanish colonial trading hub.
• Accadân — Historical and archaic name of a stream and an old village located in Tulcea County, Dobrogea, Romania. The settlement was originally inhabited by a significant Turkish and Tatar community that withdrew after the 1877 Independence War, with the village later repopulated by Romanian families from Moldavia.
• Adam-Babadam — A regional, archaic, or legendary toponymic formula used in certain micro-regions of southeastern Romania to designate a remote, isolated place or an ancient settlement with obscure origins; also used in popular fairy tales as a compound proper name attributed to a mythological character or a giant from the beginning of time. This structural term retains nuances of traditional onomastics influenced by Turkish and Balkan lexicons.
• Adam-Klisi — A graphical, historical, or popular variant for the toponym 'Adamclisi', designating a commune in Constanța County, famous for the Roman archaeological complex hosting the Tropaeum Traiani triumphal monument, erected in the 2nd century. This structural name originates from the Turkish language, where 'Adam Kilisesi' literally means 'Man's Church' or 'Church of Adam', as Ottoman locals mistook the ancient monument's ruins for a church structure.
• Adamawa — A large geographical, historical, and administrative region located in Central and West Africa, extending across the territory of Nigeria (as a federal state) and Cameroon (as an administrative region and mountainous plateau). The name originates from the Fulani leader Modibo Adama, who founded an emirate in this mountainous and fertile area during the 19th century.
• Adamov — A small town located in the South Moravian Region of the Czech Republic, historically renowned for its metallurgical and ironworking industry, with deep roots tracing back to the 14th century. The locality is nestled in a picturesque mountainous area near the Moravian Karst, also serving as an important starting point for hiking trails in neighboring nature reserves.
• Adamul — An archaic or regional definite form of the proper name Adam, historically used in isolated rural communities to designate a prominent individual, a head of a family, or a local toponym (such as an estate, hill, or forest that belonged to an ancestor with this name). The term is analyzed in historical onomastics to study how the direct articulation of given names contributed to the stabilization of Romanian surnames.
• Adămuș — A locality and commune located in Mureș County, Transylvania, Romania, situated on the Târnava Mică River; historically documented since the Middle Ages (the year 1305). The toponym also represents a surname derived through diminutive or hypocoristic suffixation from the root name Adam, carrying a profound historical resonance linked to the multiethnic communities in the region and neighboring fortified church architectures.
• Adâncata — The name of several localities and communes in the Romanian and Eastern European space, such as the Adâncata commune in Suceava County, Romania, or localities in Ukraine (Chernivtsi Oblast). The toponym is of descriptive origin, indicating the geographical placement of the village hearth inside a deep, depressed, or scenic valley, bordered by hills or ancient forests.
• Adas — An archaic, historical, or regional designation attributed to small watercourses or isolated landforms in the Balkan or Eastern European space, often linked to rural settlements that disappeared or were renamed over time. In comparative toponymy studies, the term is analyzed to identify ancient linguistic layers and migration influences on historical cadastral maps.
• Addis Ababa — The official capital and largest city of Ethiopia, situated on a high plateau in East Africa at an altitude of over 2300 meters. It represents a major political, economic, and cultural center of the continent, hosting the headquarters of the African Union and the UN Economic Commission for Africa; its name translates from Amharic as 'New Flower'.
• Addison — A proper noun of Anglo-Saxon origin used as a surname or given name, etymologically meaning 'son of Addie'. In medicine, the term identifies Addison's disease (primary chronic adrenal insufficiency), first described by British physician Thomas Addison. It also names several municipalities and towns across the United States of America.
• Adejcu — A rare historical toponymic-hydronymic name or a proper personal name mentioned in archaic documents, land registers, or old maps of the East European region. As a geographic or structural entity, it can designate a small watercourse, a local landform, or an old rural settlement that disappeared or was assimilated over time by neighboring localities.