Alys
Alys is a feminine given name. Notable people with the name include:

Alys, Countess of the Vexin (c. 1160–1220), French princess
Alys Clare (born 1944), English historical novelist
Alys Faiz (1914–2003), Pakistani poet, writer, journalist, human rights activist, social worker and teacher
Alys ferch Owain Glyndŵr (15th century), daughter of Margaret Hanmer and Owain Glyndŵr
Alys Fowler (born 1978), a television presenter
Alys Pearsall Smith (1867–1951), American Quaker
Alys Robi (1923–2011), Canadian singer
Alys Tomlinson (born 1975), British photographer
ALYS, a French virtual singer developed by VoxWave on Alter/Ego

Other uses
Alys (TV series), a television drama series on S4C