Ewald is a given name and surname used primarily in Germany and Scandinavia. It derives from the Germanic roots ewa meaning "law" and wald meaning "power, brightness". People and concepts with the name include:
Surname
- Carl Anton Ewald (1845–1915), pioneering German gastroenterologist
- Douglas Ewald (1937–2021), American politician and consultant
- Georg Ewald (1926–1973), German politician
- Johann Ewald (1744–1813), Danish general and veteran of the American Revolutionary War
- Johannes Ewald (1743–1781), Danish dramatist and poet
- Heinrich Ewald (1803–1875), German orientalist and theologian
- Paul Peter Ewald (1888–1985), German physicist, pioneer of X-ray diffraction and crystallography
- Paul W. Ewald (born 1953), evolutionary biologist specializing in the evolution of infectious disease
- Reinhold Ewald (born 1956), German astronaut
- Victor Ewald (1860–1935), Russian composer
- Wolfgang Ewald (1911–1995), German fighter pilot
Given name
- Either of the Two Ewalds, saints in Old Saxony about 692
- Ewald von Demandowsky (1906–1946), German film producer who held the office of a Nazi German Reichsfilmdramaturg and was head of production at the Tobis Film company in the Third Reich
- Ewald von Kleist (1881–1954), German field marshal during World War II
- Ewald Krolis (1947–2006), Surinamese kaseko singer
- Ewald von Lochow (1885–1942), Prussian officer and later General of Infantry during World War I, recipient of Pour le Mérite with Oakleaves
- Ewald Stadler (born 1961), Austrian politician
See also
- Ewald's sphere (named after Paul Peter Ewald), a geometric construct used in crystallography
- Ewald summation (named after Paul Peter Ewald), a method for computing the interaction energies of periodic systems
- Evald