Ethna

Ethna is a feminine Irish given name.

Notable people with the name include:
 * Ethna Byrne-Costigan (1904–1991), Irish academic and writer
 * Ethna Carbery (1864–1902), Irish journalist, writer and poet
 * Ethna Gaffney (1920-2011), Irish professor and scientist
 * Ethna MacCarthy (1903–1959), Irish poet and paediatrician
 * Ethna Rouse (born 1937), former New Zealand cricketer
 * Ethna Beulah Winston (1903–1993), American educator