Geographer in the context of Al-Masudi

Pausanias (/pɔːˈseɪniəs/ paw-SAY-nee-əs; Ancient Greek: Παυσανίας; c. 110 – c. 180) was a Greek traveler and geographer. He is famous for his Description of Greece (Ἑλλάδος Περιήγησις, Hēlládos Periḗgēsis), a lengthy work that describes ancient Greece from his firsthand observations. Description of Greece provides crucial information for making links between classical literature and modern archaeology, which is providing evidence of the sites and cultural details he mentions although knowledge of their existence may have become lost or relegated to myth or legend.

Herodotus (Ancient Greek: Ἡρόδοτος, romanized: Hēródotos; c. 484 – c. 425 BC) was a Greek historian and geographer from the Greek city of Halicarnassus (now Bodrum, Turkey), under Persian control in the 5th century BC, and a later citizen of Thurii in modern Calabria, Italy. He wrote the Histories, a detailed account of the Greco-Persian Wars, among other subjects such as the rise of the Achaemenid dynasty of Cyrus. He has been described as "The Father of History", a title conferred on him by the ancient Roman orator Cicero.

The Histories primarily cover the lives of prominent kings and famous battles such as Marathon, Thermopylae, Artemisium, Salamis, Plataea, and Mycale. His work deviates from the main topics to provide a cultural, ethnographical, geographical, and historiographical background that forms an essential part of the narrative and provides readers with a wellspring of additional information.

Hipparchus (/hɪˈpɑːrkəs/; Greek: Ἵππαρχος, Hípparkhos; c. 190 – c. 120 BC) was a Greek astronomer, geographer, and mathematician. He is considered the founder of trigonometry, but is most famous for his incidental discovery of the precession of the equinoxes. Hipparchus was born in Nicaea, Bithynia, and probably died on the island of Rhodes, Greece. He is known to have been a working astronomer between 162 and 127 BC.

Hipparchus is considered the greatest ancient astronomical observer and, by some, the greatest overall astronomer of antiquity. He was the first whose quantitative and accurate models for the motion of the Sun and Moon survive. For this he certainly made use of the observations and perhaps the mathematical techniques accumulated over centuries by the Babylonians and by Meton of Athens (fifth century BC), Timocharis, Aristyllus, Aristarchus of Samos, and Eratosthenes, among others.

Claudius Ptolemy (/ˈtɒləmi/; Ancient Greek: Πτολεμαῖος, Ptolemaios; Latin: Claudius Ptolemaeus; c. 100 – 160s/170s AD), better known mononymously as Ptolemy, was a Greco-Roman mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine, Islamic, and Western European science. The first was his astronomical treatise now known as the Almagest, originally entitled Mathēmatikḗ Syntaxis (Μαθηματικὴ Σύνταξις, Mathēmatikḗ Syntaxis, lit. 'Mathematical Treatise'). The second is the Geography, which is a thorough discussion on maps and the geographic knowledge of the Greco-Roman world. The third is the astrological treatise in which he attempted to adapt horoscopic astrology to the Aristotelian natural philosophy of his day. This is sometimes known as the Apotelesmatika (Αποτελεσματικά, 'On the Effects') but more commonly known as the Tetrábiblos (from the Koine Greek meaning 'four books'; Latin: Quadripartitum).

The Catholic Church promoted his work, which included the only mathematically sound geocentric model of the Solar System, and unlike most Greek mathematicians, Ptolemy's writings (foremost the Almagest) never ceased to be copied or commented upon, both in late antiquity and in the Middle Ages. However, it is likely that only a few truly mastered the mathematics necessary to understand his works, as evidenced particularly by the many abridged and watered-down introductions to Ptolemy's astronomy that were popular among the Arabs and Byzantines. His work on epicycles is now seen as a very complex theoretical model built in order to explain a false tenet based on faith.

Eratosthenes of Cyrene (/ɛrəˈtɒsθəniːz/; Ancient Greek: Ἐρατοσθένης [eratostʰénɛːs]; c. 276 BC – c. 195/194 BC) was an Ancient Greek philosopher, polymath and scholar. He was known as a mathematician, geographer, poet, astronomer, and music theorist. Eratosthenes became the chief librarian at the Library of Alexandria. His work was the precursor to the modern discipline of geography, and he introduced some of its terminology, coining the terms geography and geographer.

He is best remembered as the first known person to calculate the Earth's circumference. He was also the first to calculate Earth's axial tilt, which similarly proved to have remarkable accuracy. He created the first global projection of the world incorporating parallels and meridians based on the available geographic knowledge of his era. Eratosthenes was the founder of scientific chronology; he used Egyptian and Persian records to estimate the dates of the main events of the Trojan War, dating the sack of Troy to 1184 BC. In number theory, he introduced the sieve of Eratosthenes, an efficient method of identifying prime numbers and composite numbers.

Posidonius (/ˌpɒsɪˈdoʊniəs/; Ancient Greek: Ποσειδώνιος Poseidṓnios, "of Poseidon") "of Apameia" (ὁ Ἀπαμεύς) or "of Rhodes" (ὁ Ῥόδιος) (c. 135 – c. 51 BC), was a Greek politician, astronomer, astrologer, geographer, historian, mathematician, and teacher native to Apamea, Syria. He was considered the most learned man of his time and, possibly, of the entire Stoic school. After a period learning Stoic philosophy from Panaetius in Athens, he spent many years in travel and scientific researches in Spain, Africa, Italy, Gaul, Liguria, Sicily and on the eastern shores of the Adriatic. He settled as a teacher at Rhodes where his fame attracted numerous scholars. Next to Panaetius he did most, by writings and personal lectures, to spread Stoicism to the Roman world, and he became well known to many leading men, including Pompey and Cicero.

His works are now lost, but they proved a mine of information to later writers. The titles and subjects of more than twenty of them are known. In common with other Stoics of the middle period, he displayed syncretic tendencies, following not just the earlier Stoics, but making use of the works of Plato and Aristotle. A polymath as well as a philosopher, he took genuine interest in natural science, geography, natural history, mathematics and astronomy. He sought to determine the distance and magnitude of the Sun, to calculate the diameter of the Earth and the influence of the Moon on the tides.

Abraham Ortelius (/ɔːrˈtiːliəs/ or-TEE-lee-əs; also Ortels, Orthellius or Wortels; 4 or 14 April 1527 – 28 June 1598) was a cartographer, geographer, and cosmographer from Antwerp in the Spanish Netherlands. He is recognized as the creator of the first modern atlas, the Theatrum Orbis Terrarum (Theatre of the World). Along with Gemma Frisius and Gerardus Mercator, Ortelius is generally considered one of the founders of the Netherlandish school of cartography and geography. He was a notable figure of this school in its golden age (approximately 1570s–1670s) and an important geographer of Spain during the age of discovery. The publication of his atlas in 1570 is often considered as the official beginning of the Golden Age of Netherlandish cartography. He was the first person proposing that the continents were joined before drifting to their present positions.

Strabo (/ˈstreɪboʊ/; Greek: Στράβων, romanized: Strábōn; 64 or 63 BC – c. 24 AD) was an ancient Greek geographer who lived in Asia Minor during the transitional period of the Roman Republic into the Roman Empire. He is best known for his work Geographica, which presented a descriptive history of people and places from different regions of the world known during his lifetime. Additionally, Strabo authored historical works, but only fragments and quotations of these survive in the writings of other authors.

Hecataeus of Miletus (/ˌhɛkəˈtiːəs/; Greek: Ἑκαταῖος ὁ Μιλήσιος; c. 550 – c. 476 BC), son of Hegesander, was an early Greek historian and geographer.

Alfred Russel Wallace (8 January 1823 – 7 November 1913) was an English naturalist, explorer, geographer, anthropologist, biologist and illustrator. He independently conceived the theory of evolution through natural selection; his 1858 paper on the subject was published that year alongside extracts from Charles Darwin's writings on the topic. It spurred Darwin to set aside the "big species book" he was drafting and to quickly write an abstract of it, which was published in 1859 as On the Origin of Species.

Wallace did extensive fieldwork, starting in the Amazon River basin. He then did fieldwork in the Malay Archipelago, where he identified the faunal divide now termed the Wallace Line, which separates the Indonesian archipelago into two distinct parts: a western portion in which the animals are largely of Asian origin, and an eastern portion where the fauna reflect Australasia. He was considered the 19th century's leading expert on the geographical distribution of animal species, and is sometimes called the "father of biogeography", or more specifically of zoogeography.

Henri Hauser (19 July 1866 – 27 May 1946) was a French historian, geographer, and economist. A pioneer in the study of the economic history of the early modern period, he also wrote on contemporary economic issues and held the first chair in economic history to be established at a French university.

He was born in Oran into a middle-class Jewish family who had moved to French Algeria for health reasons but returned to France when Hauser was four years old. Hauser was educated at the Lycée Condorcet in Paris and then at the École Normale Supérieure where he came first in both the entrance and leaving examinations. He initially taught in provincial lycées before taking his doctorate in 1892 with a thesis on the 16th-century Huguenot leader, François de la Noue. Hauser went on to become a professor of ancient and medieval history at the University of Clermont-Ferrand, modern history and geography at the University of Dijon, and finally a professor of history and economic history at the Sorbonne from 1919 to 1936. His 1905 book L'impérialisme américain predicted the decline of Europe and the dominance of the United States, while his 1915 Méthodes allemandes d'expansion économique analyzed the role played by German industry in the outbreak of World War I. Hauser was awarded the Legion of Honor in 1919 and in 1945 the Académie française awarded him the Prix de l'Académie for his life's work.

Pristan'-Przheval'sk is an urban-type settlement in the Issyk-Kul Region of Kyrgyzstan. Administratively, it is part of the city Karakol. The town was named after the Russian geographer, Nikolai Mikhailovich Przhevalsky, who is buried nearby. It lies 12 km north west of Karakol. Its population was 2,829 in 2021.

Kyrgyz and Dungan rebels attacked Przheval'sk during the 1916 Basmachi revolt. This was met by repression and in Przheval'sk 70% of the Kyrgyz died along with 90% of their cattle.

Charles Marie de La Condamine (French: [la kɔ̃damin]; 28 January 1701 – 4 February 1774) was a French explorer, geographer, and mathematician. He spent ten years in territory which is now Ecuador, measuring the length of a degree of latitude at the equator and preparing the first map of the Amazon region based on astro-geodetic observations. Furthermore he was a contributor to the Encyclopédie.

Gerardus Mercator (/dʒəˈrɑːrdəs mɜːrˈkeɪtər, mər-/; 5 March 1512 – 2 December 1594) was a Flemish geographer, cosmographer and cartographer. He is most renowned for creating the 1569 world map based on a new projection which represented sailing courses of constant bearing (rhumb lines) as straight lines—an innovation that is still employed in nautical charts.

Mercator was a notable maker of globes and scientific instruments. In addition, he had interests in theology, philosophy, history, mathematics, and geomagnetism. He was also an accomplished engraver and calligrapher. Unlike other great scholars of the age, he travelled little and his knowledge of geography came from his library of over a thousand books and maps, from his visitors and from his vast correspondence (in six languages) with other scholars, statesmen, travellers, merchants and seamen. Mercator's early maps were in large formats suitable for wall mounting but in the second half of his life, he produced over 100 new regional maps in a smaller format suitable for binding into his Atlas of 1595. This was the first appearance of the word Atlas in reference to a book of maps. However, Mercator used it as a neologism for a treatise (Cosmologia) on the creation, history and description of the universe, not simply a collection of maps. He chose the word as a commemoration of the Titan Atlas, "King of Mauretania", whom he considered to be the first great geographer.

Onésime Reclus (22 September 1837 – 30 June 1916) was a French geographer who specialized in the relations between France and its colonies.

In 1880 he coined the term "Francophonie" as a means of classification of peoples of the world, being determined by the language they all spoke. While this term did not appear in dictionaries until 1930, it has become more important since the late 20th century as part of conceptual rethinking of cultures and geography.

Pandi Geço (1913–1994) was an Albanian geographer. He was best known for his unique regionalization of Albania into four physical-geographic regions, a regionalization proposed for the first time by him and still used today. He was also the author of the first Albanian academic textbooks of geography.