Allo
Allo may refer to:

allo-, a prefix used in linguistics to form terms for variant forms
'Allo, a form of Hello
Allo, a shortening of allosexual
Allopregnanolone, a neurosteroid sometimes abbreviated as "ALLO"
'Allo 'Allo!, a British television sitcom

Places 

 Allo, Navarre, a town in Spain
 Allo Mahar, a village and union council in Pakistan

Songs 

 "Allô, allô", a 2006 song by Ilona
 "Allo" (song), a 2021 song by Loboda

Technology 

 Allo (company), a Ukrainian electronics distribution company
 Allo Communications, a fiber-optic telecommunications company and subsidiary of Nelnet
 Google Allo, a discontinued AI-based messaging app made by Google

See also

Alo (disambiguation), for a list of meanings of "Alo" and "ALO"