Holy Trinity Church, Armenian Apostolic church in Malatia-Sebastia district, Yerevan, Armenia.

Holy Trinity Church is an Armenian Apostolic church in Yerevan's Malatia-Sebastia district, built from 2001 to 2005 to a design by architect Baghdasar Arzoumanian and modelled on the 7th-century Zvartnots Cathedral. Its crosses were consecrated on 9 November 2004 and the church itself on 20 November 2005 by Catholicos Karekin II.

Construction began in March 2001 to the design of architect Baghdasar Arzoumanian, funded by the Armenian-American benefactor Louise Simone Manoogian. On 9 November 2004 Catholicos Karekin II consecrated the church's crosses, and he consecrated the church itself on 20 November 2005. The building follows the model of the 7th-century Zvartnots Cathedral.

The church is named for the Holy Trinity and belongs to the Armenian Apostolic Church; its crosses were consecrated by Catholicos Karekin II on 9 November 2004, and he consecrated the church itself on 20 November 2005. The parish in Malatia-Sebastia keeps an active community life today, so visitors may find services and gatherings in progress.

The church stands in the Malatia-Sebastia district in the south-western part of Yerevan, reached by car or public transport. It is an active parish, so visits fit around services; dress modestly as in any Armenian Apostolic church.

The church is a modern-scale replica of the 7th-century Zvartnots Cathedral, a circular domed structure whose ruins stand near Etchmiadzin. Architect Baghdasar Arzoumanian drew the plans, and Louise Simone Manoogian, an Armenian-American benefactor, paid for the construction. Karekin II consecrated the crosses on 9 November 2004, a year before the church itself.