Basílica de Nossa Senhora Auxiliadora, Catholic basilica in Santa Rosa, Niterói, Brazil.

The Basílica de Nossa Senhora Auxiliadora is a Catholic church on Rua Santa Rosa in the Santa Rosa neighbourhood of Niterói, part of the Salesian Colégio Santa Rosa complex. It combines Moorish and Gothic architectural features, with a tall tower and stained-glass windows. Its bells can be heard across the neighbourhood despite local traffic noise.

The first stone was laid in December 1901, replacing a chapel built by Father Miguel Borguino in 1884. The Italian Salesian engineer Domingos Delpiano directed the construction, and the church was inaugurated on 24 December 1918. On 1 July 1944 the parish seat was transferred here from the hard-to-reach Matriz de Santa Rosa de Viterbo, and Pope Pius XII elevated it to a basilica on 12 September 1950.

The name refers to Mary as Helper, a veneration deeply rooted in the local community's faith. Visitors can notice the devotion of worshippers during services, when the church fills with prayers and hymns.

The basilica stands on Rua Santa Rosa, within the Santa Rosa Salesian College complex, and its bells carry across the neighbourhood despite the local traffic and commerce. The parish seat was moved here in 1944 from the Matriz de Santa Rosa de Viterbo, which sits atop a steep slope in the same district. Plan the visit around the fact that the church is an active parish.

The interior houses one of the world's largest pipe organs, with thousands of individual pipes working together to create a powerful sound. This technical achievement draws music lovers and enriches the acoustics experienced during worship.