Alianza may refer to:

• Alianza Atlético, Peru
• Alianza Petrolera F.C., Columbia
• Alianza Universidad, Peru
• Club Alianza Lima, Peru
• Alianza F.C. (Colombia)
• Alianza F.C. (El Salvador)
• Alianza F.C. (Panama)

• Alianza (Argentine band)
• Alianza (Anglo-Chilean band)
• Alianza (album)

• Alianza, a municipality in Honduras
• Alianza Puertorriqueña, a defunct political party in Puerto Rico
• Alliance for Work, Justice and Education, a former party coalition in Argentina
• Alianza por Chile, a former right-wing political coalition in Chile
• Alianza Islámica, Latino Muslim organization
• Alianza Uruguaya por el Sufragio Femenino, a Uruguayan women's suffrage organization

• Alliance (disambiguation)