Below is a list of churches in Old San Juan grouped by denomination.

Catholic:

Iglesia Sierva de Maria
1 Calle Fortaleza
787-724-2228
Mass (Mon – Fri ): 6:30 am
Mass Sun 7:00 am

Parroquia San Agustin
262 Calle Constitucion
787-722-4289
Mass: Sun 7 AM 10 am and 4:30 pm
Tus – Fri 12 pm
Sat 5 pm

Iglesia Santa Ana
203 Calle Tetuan
787-722-1881, 787-722-0861
Mass (Mon – Fri ) 7:25 am (no mass on holidays)
Mass Sat  4:00 pm

Catedral de San Juan
151 Calle del Cristo
787-722-0861
Mass: M-F 7:25 am
Sat 7 pm
Sun 9 and 11 am

Iglesia de San Jose
Calle del Cristo
787-918-3800
Mass: 4th Saturday of the month at 12:30pm

Iglesia San Francisco de Asis
301 Calle San Francisco
787-724-1131
Mass: Wed – Fri 12:15 pm
Sat 12:15 pm and 5:15 pm
Sun 8 am, 9:30 am and 11 am

Presbyterian:

San Juan Presbyterian Church
61 Calle Fortaleza
787-722-0821
Sunday School 9:30 am Worship 11 am

Methodist:

Iglesia Metodista Santisima Trinidad
103 Calle Sol
787-725-8728
Sunday School: 10 am
Mass: Sunday 11 am
Tuesday 7:30pm Oracion y Estudio Biblico
Wednesday  12:15 pm to 12:45 pm Oracion Ecumenica

Pentecostal:

Iglesia de Dios Pentecostal
62 Calle Cruz

Non-Denonminational:

Iglesia Defensores de la Fe – Templo la Hermosa
261 Calle Sol