两会指的是：基督教三自爱国运动委员会（The Committee of the Three-Self Patriotic Movement of the Protestant Churches）和基督教协会（The Christian Council）.
所以,广州市基督教两会的英文全称是：The Committee of the Three-Self Patriotic Movement of the Protestant Churches and the Christian Council of Guangzhou.
如果是需要用在字数较少的地方可以用：TSPM & CCC, Guangzhou.CCC的第一个C代表的是China（中国）.
也可以非正式地缩写成：Three-Self Church and Christian Council of Guangzhou