The pediatric chest X-ray (CXR) provides a wealth of useful information. In most instances, clinicians are seeking more definitive information regarding the lungs. Findings can be subtle or obvious, but difficult to notice. “Tunnel vision” permits the human brain to focus on areas of interest, only to miss other important findings. This chapter discusses the clinical entities that can be identified on a pediatric CXR and presents examples of most of these entities. The CXR is best read in a methodical manner focusing one’s attention on the heart, lungs, aorta, mediastinum, bones, neck, abdomen, and the periphery of the CXR.