RHA is an acronym that may refer to:

  • Rolled homogeneous armour
  • Regional health authority (disambiguation)
  • Regional health authority (United Kingdom), a former type of administrative organisation of the NHS in England and Wales
  • Religious Heritage of America
  • Residence hall association
  • Rice husk ash, a by-product from rice culture used as cement admixture
  • Rivers and Harbors Act, any number of various acts of legislation of the United States Congress
  • Road Haulage Association
  • Royal Hibernian Academy, and the post-nominal letters used by its members
  • Royal Horse Artillery
  • RNA helicase, an enzyme

Rha may refer to:

  • Rha, Netherlands, a population center in Steenderen
  • Rhamnose, a monosaccharide
  • Volga River (the ancient name of the river in Latin, from Ancient Greek Ῥᾶ, thought to be a borrowing from reconstructed Scythian *Rā or *Rahā)
  • Rha (Cyrillic), a Cyrillic letter

Letters from alphabets that can be called rha:

  • र, ड़', ढ़, र्ह — Devanagari letters which can be called ra, ṛa or rha;
  • Ԗ — the 23rd letter rha («ра») in the older (1924−1927) Moksha language Cyrillic alphabet

See also

  • Ra (disambiguation)