Rocuronium bromide (brand names Zemuron, Esmeron) is an aminosteroid non-depolarizing neuromuscular blocker or muscle relaxant used in modern anaesthesia to facilitate tracheal intubation by providing skeletal muscle relaxation, most commonly required for surgery or mechanical ventilation.

[4] The γ-cyclodextrin derivative sugammadex (trade name Bridion) is an agent to reverse the action of rocuronium by binding to it with high affinity.

[9] On October 3, 2016, the U.S. state of Ohio announced that it would resume executions on January 12, 2017, using a combination of midazolam, rocuronium bromide, and potassium chloride.

[10] On August 24, 2017, the U.S. state of Florida executed Mark James Asay using a combination of etomidate, rocuronium bromide, and potassium acetate.

[12] Rocuronium bromide is marketed under the brand name Zemuron in the United States and Esmeron in most other countries.