The present paper attempts to explore the characteristics of an effective teacher of English. Some related factors such as qualification, attributes, roles, and professional ethics have also been dealt with. In Saudi Arabia, the teacher of English plays the most important role in the process of teaching/learning. There are so many factors such as L1 interference, parental attitude, home environment, schooling etc that are usually influential in the case of educational setting in general and English classes in particular. It is believed that if the teacher of English has undergone a pre-service teacher training it is better for the learners of Saudi Arabia. In the other case, those who have not attended pre-service teacher training, they should go for in-service professional development programs in order to equip them further for innovative teaching and educational output.