Moore (pronounced or ) is a common English-language surname. It was the 19th most common surname in Ireland in 1901 with 15,417 members. It is the 34th most common surname in Australia, 32nd most common in England, and was the 16th most common surname in the United States in 2000. It can have several meanings and derivations, as it appeared as a surname long before written language had developed in most of the population, resulting in a variety of spellings. Variations of the name can appear as Moore, More or Moor; as well as the Scottish Gaelic originations Muir, Mure and Mor/Mór; the Manx Gaelic origination Moar; the Irish originations O'More and Ó Mórdha; and the later Irish variants O'Moore and de Mora. The name also arises as an anglicisation of the Welsh epithet Mawr meaning great or large. The similarly pronounced surname Mohr is of Germanic lineage and is not related to the Gaelic/English variations.

Meanings and origins

Frequency

In the United States, "Moore" ranked 9th among all surnames in the 1990 census, accounting for 0.3% of the population.