Dayan (given name)
Dayan is a given name. Notable people with the name include:
- Dayan Díaz (born 1989), Colombian baseball player
 - Dayan Gonzalez (born 1999), Cuban boxer
 - Dayan Hochman-Vigil (fl. 2019), American attorney and politician
 - Dayan Jayatilleka (born 1956), Sri Lankan academic, diplomat, writer and politician
 - Dayan Khan (1472–1517), khagan of the Northern Yuan dynasty
 - Dayan Khan (Khoshut) (died 1668), ruler of the Khoshut Khanate
 - Dayan Kodua (born 1980), German-Ghanaian actress, author and model
 - Dayan Lake (American football) (born 1997), Liberian American football player
 - Dayan Rajapakse (born 1972), Sri Lankan physician, educator and businessman
 - Dayan Téllez (born 2002), Mexican football goalkeeper
 - Dayán Viciedo (born 1989), Cuban baseball player
 - Dayan van der Westhuizen (born 1994), South African rugby player
 - Dayan Witharana (born 1962), Sri Lankan singer and photographer
 
See also
- Dayan (surname)
 - Dayana, a given name
 - Diane (given name)