Analgesia for many open thoracic and abdominal procedures has traditionally been accomplished through neuraxial techniques or paravertebral blocks. Erector spinae plane (ESP) blocks purport effective analgesia over a similar anatomical distribution with a more favorable side effect profile and complication rate than epidurals. However, the extent of clinical applicability for ESP blocks has yet to be elucidated. In this case series, we demonstrate the efficacy of ESP blocks for 3 distinct etiologies of acute pain: planned perioperative analgesia, rescue postoperative analgesia, and traumatic pain.