The Nant Morlais may refer to:

• Afon Morlais, a river running from Crosshands to the estuary of the River Loughor
• Nant Morlais, the tributary of the River Taff from Ponsticill reservoir to the Taff Fawr in Merthyr Tydfil

This disambiguation page lists articles associated with the title Nant Morlais.
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