A flash apparatus is provided. The flash apparatus includes: an attachment portion capable of being attached in a freely detachable manner to an attachment target portion provided on an imaging apparatus; a main body supported in a turnable manner in an anteroposterior direction with respect to the attachment portion by means of a first turning portion; and a light-emitting portion supported in a turnable manner in an anteroposterior or vertical direction with respect to the main body by means of a second turning portion, including a light emitter directly or indirectly emitting light to a subject.