Bouncy castles and other inflatables are to be banned at events on land owned by Havant Borough Council.
The local authority said the move followed recent tragedies involving bouncy castles and inflatables in Essex and Norfolk.
Three-year-old Ava-May Littleboy was thrown 20ft in the air when the inflatable trampoline she was playing on exploded on Gorleston Beach, Norfolk, on Sunday.
Her death came a fortnight after two fairground workers were jailed for manslaughter by gross negligence after a bouncy castle flew away with a young girl inside.
Summer Grant, seven, died after the inflatable was carried 300m across a park in Harlow, Essex, in March 2016.
The recent tragedies involving bouncy castles and inflatables were due in one case to the inflatable being insufficiently moored in Essex (which is a manageable risk) and the other, in Norfolk, to an explosion for causes as yet unknown. The extreme high temperatures that are currently being experienced may have been a major contributory factor to the explosion, however we don't know this for certain. Until the cause of the explosion has been properly identified, it is not possible to manage this risk."