Posted in
With proper training and using a glider certified for this type of flying (and further not confusing can with should), yes, aerobatics are entirely possible in a sailplane. Many commercial operations offer this type of instruction.
As an interesting footnote: gliders are typically stronger than other types of aircraft. The FAA (Federal Aviation Administration) recognizes three ascending strength categories for aircraft of "Normal," "Utility" and "Aerobatic." All gliders are at least Utility — without an engine and related components, it's easier to create a stronger airframe.