Discourse markers improve the quality of writing and increase the comprehension of text. This paper attempts to throw more light in measuring the students' knowledge about Discourse Markers. This paper aims to exponentiate the Discourse Markers in ESL students' essay writing. The Qualitative data was collected from intermediate students of grade 9 from a school in Dubai. Six of their essays were chosen randomly and only nine extracts were analyzed. These extracts focus on how students use Discourse markers with cohesion and coherence. The findings were categorized into three parts: Misused Discourse Markers', Overused Discourse Markers', and Advanced used Discourse Markers'. Based on the results, opportunities for further studies were underlined and recommendations were proposed.