St. Benedict's Abbey

Founded: 1898; elevated to the rank of a territorial abbey in 1931; became an autonomous abbey in the diocese in 1969
Location: Peramiho, Tanzania
Number of Monks: 59
Apostolates: Pastoral Ministry; Vocational Training Center; Nurses' & Midwives' Training School; Hospital; Kindergarten; Printing Press and Publishing House; Spirituality and Conference Center
Dependent House: St. Raphael's Priory (Uwemba, Tanzania)

Our Lady Help of Christians Abbey

Founded: 1906; elevated to the rank of a territorial abbey in 1931; became an autonomous abbey in the diocese in 1972
Location: Ndanda, Tanzania
Number of Monks: 77
Apostolates: Pastoral Ministry; Zakeo Spiritual Center (Retreat House); Secondary School; St. Benedict's Hospital; Nursing School; Secretarial Training; Uzima AIDS Project; Ndanda Mission Press (Printery & Publishing House)
Dependent Houses: St. Maurus Procure (Kurasini, Tanzania); St. Benedict's Monastery (Sakharani, Tanzania) 

Sacred Heart Abbey

Founded: 1922; elevated to the rank of an abbey in 1982
Location: Vryheid, South Africa
Number of Monks: 38
Apostolates: Pastoral Ministry; Inkamana High School; Guest House
Dependent Houses: St. Boniface Monastery (Waldfrieden, Namibia)

St. Maurus Abbey

Founded: 1957; elevated to the rank of an abbey in 1994
Location: Songea, Tanzania
Number of Monks: 140
Apostolates: Pastoral work in parishes; Hanga Seminary; St. Benedict's Secondary School; Hanga Vocational Training Center; St. Laurence's Kindergarten; St. Benedict's Dispensary; Mobile medical services in remote villages
Dependent Houses: St. John Bosco Formation House (Nakagugu, Tanzania); St. Theresa of Lisieux Priory (Katibunga, Tanzania); St. Joseph's Farm (Nole, Tanzania); St. Placidus Procure (Dar es Salaam, Tanzania); St. Bernard's Priory (Kipalapala, Tanzania); St. Benedict's Monastery (Mbeya, Tanzania); St. Benedict's Monastery (Pugu, Tanzania)

Prince of Peace Priory

Founded: 1978; elevated to the rank of a conventual priory in 1988
Location: Limuru, Kenya
Number of Monks: 30
Apostolates: Guest House; City Parish; Pastoral Ministry
Dependent Houses: St. Benedict's Monastery (Nairobi, Kenya); Our Lady of Mt. Kenya Monastery (Nanyuki, Kenya); Monastery of St. Peter the Fisherman (Illeret, Kenya)

Holy Spirit Abbey

Founded: 1979; elevated to the rank of an abbey in 2001
Location: Sumbawanga, Tanzania
Number of Monks: 70
Apostolates: Chemchemi Secondary School; St. Placidus Primary School; St. Maurus College (teacher training college); Medical Clinic; Pastoral Ministry
Dependent Houses: St. Benedict's Monastery (Sumbawanga, Tanzania); St. Bernard's Monastery (Kipili, Tanzania)

Abbey of the Incarnation

Founded: 1985; joined the Congregation in 1991; elevated to the rank of an abbey in 2016
Location: Kara, Togo
Number of Monks: 30
Apostolates: Guest House; Pastoral Ministry; Education
Dependent Houses: St. Maurus & St. Placidus Monastery (Kara, Togo); Cella St. Boniface (Lomé, Togo)