The Roman Catholic Diocese of Alto Solimões (Latin: Dioecesis Solimões Superioris) is a diocese located in the city of Tabatinga in the ecclesiastical province of Manaus in Brazil.

• May 23, 1910: Established as Apostolic Prefecture of Alto Solimões from the Diocese of Amazonas
• August 11, 1950: Promoted as Territorial Prelature of Alto Solimões
• August 14, 1991: Promoted as Diocese of Alto Solimões

• Prefects apostolic of Alto Solimões (Latin Church)
  • Evangelista Galea (6 Sep 1910 – 1938)
  • Tomaz M. de Marcellano (1938 – 1945)
  • Venceslao da Spoleto (8 Nov 1946 – 1950)
  • Wesceslau Nazareno Ponte de Spoleto (Apostolic Administrator 4 Sep 1950 – 1952)
• Prelates of Alto Solimões (Latin Church)
  • Wesceslau Nazareno Ponte de Spoleto (1952 – 1952)
  • Cesário Alexandre Minali (1 Mar 1955 – 9 Apr 1958), appointed Prelate of Carolina, Maranhão
  • Adalberto Domingos Marzi (Apostolic administrator 8 Apr 1959 – 4 Feb 1961)
  • Adalberto Domingos Marzi (4 Feb 1961 – 12 Sep 1990)
• Bishops of Alto Solimões (Latin Church)
  • Evangelista Alcimar Caldas Magalhães (12 Sep 1990 – 20 May 2015)
  • Adolfo Zon Pereira, S.X. (20 May 2015 – present)

• Adolfo Zon Pereira, S.X. (2014-2015)

• Catholic Hierarchy.org: Roman Catholic Diocese of Alto Solimões

4°13′45″S 69°56′17″W / 4.2291°S 69.9381°W / -4.2291; -69.9381