The Morada Nova sheep takes its name from a municipality in the state of CearΓ‘ in northeastern Brazil, where the breed was developed and maintained in relative genetic isolation for centuries. "Morada Nova" translates to "New Dwelling" in Portuguese, referring to the town where these sheep became most concentrated and renowned. Within Brazil, the breed is consistently known as "Morada Nova" or sometimes "ovelha Morada Nova" (Morada Nova sheep), with the name serving as both the place designation and the breed identification.
Historically, these sheep were sometimes grouped under broader designations like "Brazilian hair sheep" or "northeastern Brazilian sheep," particularly in older agricultural literature that did not distinguish between the various local hair sheep populations. However, as breed conservation efforts intensified and the unique characteristics of Morada Nova sheep became more widely recognized, the specific designation gained importance. The breed maintains strong connections to its geographic origin, with purebred Morada Nova tracing their ancestry to foundation flocks from the CearΓ‘ region.
International recognition of the breed is relatively recent, with exports to other countries including the United States beginning primarily in the early 2000s. In North American and international contexts, the breed maintains its Portuguese name "Morada Nova" without translation, though pronunciation varies. English speakers often pronounce it "mo-RAH-dah NO-vah" while Portuguese speakers use a slightly different vowel emphasis. The scientific classification places Morada Nova within Ovis aries alongside all domestic sheep breeds, though their genetic distinctiveness from European wool sheep reflects centuries of selection under tropical conditions with minimal European genetic influence after their initial introduction in the 1500s.

