Modern English (sometimes New English as opposed to Middle English and Old English) is the form of the English language spoken since the Great Vowel Shift in England, completed in roughly 1550.

With some differences in vocabulary, texts from the early 17th century, such as the works of William Shakespeare and the King James Bible, are considered to be in Modern English, or more specifically, are referred to as using Early Modern English or Elizabethan English. English was adopted in regions around the world, such as North America, India, Africa, Australia and New Zealand through colonisation by the British Empire.

Modern English has a large number of dialects spoken in diverse countries throughout the world. This includes American English, Australian English, British English, Canadian English, Caribbean English, Hiberno-English, Indo-Pakistani English, Nigerian English, New Zealand English, Philippine English, Singaporean English, and South African English.

According to the Ethnologue, there are over 1 billion speakers of English as a first or second language as of 1999. English is spoken in a vast number of territories including the United Kingdom, Ireland, Canada, the United States of America, Australia, New Zealand, India, Pakistan, Philippines, Singapore and Southern Africa. Its large number of speakers, plus its worldwide presence, have made English a common language for use in such diverse applications as controlling aircraft, developing software, conducting international diplomacy, and business relations.

In history, the early modern period of modern history follows the late Middle Ages. Although the chronological limits of the period are open to debate, the timeframe spans the period after the late portion of the Middle Ages (c. 1500) through the beginning of the Age of Revolutions (c. 1800) and is traditionally demarcated by historians as beginning with the conquest of Constantinople by the Ottoman Empire in 1453 CE. From a global standpoint, the most important feature of the early modern period was its globalizing character — it witnessed the exploration and colonization of the Americas and the rise of sustained contacts between previously isolated parts of the globe. The historical powers became involved in global trade. This world trading of goods, plants, animals, and food crops saw exchange in the Old World and the New World. The Columbian Exchange greatly affected almost every society on Earth.

In the world, capitalist economies and institutions became more sophisticated and globally articulated. This process began in the medieval North Italian city-states, particularly Genoa, Venice, and Milan. The early modern period also saw the rise and beginning of the dominance of the economic theory of mercantilism. It also saw the European colonization during the 15th to 19th centuries which resulted in the spread of Christianity around the world.