English Writing System book with the title Introduction to Paragraph Writing is created by Peptia Asrining Tyas & Dian Inayati. Writing a good piece of text academically requires students’ basic writing proficiency, particularly in paragraph writing. Their failure in writing a good paragraph may lead to poor academic writing competence. This underlies the importance of providing references as well as guidance as an aid for students to write a good paragraph. This book is expected to benefit not only writing teachers and students, but also those attempting to improve the quality of their academic paragraph writing in English. Introduction to Paragraph Writing book attempts to accommodate it by covering not only process writing but also genre-based writing aspects. It covers paragraph structure, unity and coherence, and topics on types of paragraph writing genres such as narrative, descriptive, and causeeffect. Several paragraph models illustrating the generic structure of each of the genres, exercises, and writing platforms are also provided to help teachers as well as self-learners in paragraph writing.