The Achilles tendon is the most commonly injured tendon in the foot and ankle; injuries commonly are related to sports/athletic activities. Imaging modalities that are used most commonly in the diagnostic assessment of the Achilles tendon include conventional radiography, ultrasonography, and MRI. This article reviews the normal and pathologic imaging features of the Achilles tendon, and highlights the potential usefulness and limitations of various imaging techniques in the noninvasive assessment of the tendon and the potential impact of imaging findings on clinical patient care.