Masjid Ul Khaleefah is a Sunni mosque located at 34 Lamont Street, Longdenville, Trinidad and Tobago. The mosque serves as an important center for Islamic worship, education, and community life, providing a welcoming environment for Muslims to practice their faith according to the Qur'an and the authentic Sunnah. It is known for its emphasis on Islamic learning, spiritual development, and community outreach, and is led by Imam Abu Mujahid Edu Muhammad.

The mosque conducts the five daily prayers, Jumu'ah (Friday) congregational prayers, Qur'an recitation and study, Islamic lectures, and educational programs for children, youth, and adults. It also hosts special activities during Ramadan, including Taraweeh prayers, iftar gatherings, and Eid celebrations, while encouraging charitable work, family engagement, and the development of sound Islamic knowledge.

As an active Islamic institution in central Trinidad, Masjid Ul Khaleefah plays an important role in promoting faith, education, and community service. Through its religious programs, educational initiatives, and outreach activities, the mosque contributes to the spiritual well-being of the local Muslim community and to the rich religious and cultural diversity of Trinidad and Tobago.