A.C.A K.K.Nagar is a branch of the Apostolic Christian Assembly founded by Pastor G.Sundaram as a Pentecostal Church at Purasawalkam, Chennai.

Since 1974, the family of Bro.George John living in K.K.Nagar had been attending Sunday Service at A.C.A purasawalkam, and with a desire to begin a ministry held prayer meetings in their home every Friday evening. When souls got saved, they were baptized by the pastors at A.C.A purasawalkam, and as the number of souls steadily grew, the Holy Spirit gave a leading in the heart of Sis.Pauline George to have a temporary shed on the terrace of their home, and have regular services on every Sunday morning and evening. Pastor G.Sundaram and Pastor Sam Sundaram dedicated Bro. S.Anand as Pastor of the church, and blessed Sis.MercyAnand so that she could assist the paster. The Church began to function as a branch of A.C.A purasawalkam in the 1980’s.