This chapter provides detail description of echocardiographic assessment of coronary arteries including its morphology and coronary flow reserve. This chapter covers important topic like assessment of coronary morphology and flow in transthoracic and transesophageal studies, visualization of coronary arteries, distal coronary flow and coronary flow reserve, congenital abnormalities of the coronary arteries There are two tables in this chapter which are very well explained for studies with proximal segments of coronary arteries, proposed cut-off values, assessment of significant stenosis, absence of significant stenoses in epicardial arteries for better understanding. Summery is also mentioned at the end of chapter. Each topic is described with color images. 16 self-explanatory and comprehensive images are included in this chapter. 44 references are given at the end of the chapter to facilitate further reading.