Butyl bromide (C₄H₉Br) may refer to:

• 1-Bromobutane (n-Butyl bromide)
• 2-Bromobutane (sec-butyl bromide)
• 1-Bromo-2-methylpropane (isobutyl bromide)
• 2-Bromo-2-methylpropane (tert-butyl bromide)