Shock absorber

A shock absorber comprising:

• a shock absorber main body that has a cylindrical outer shell interposed between a vehicle body and a wheel in a vehicle;
• a protruding portion that is provided on a side portion of the outer shell and protrudes radially outward;
• and
• a bracket that is attached to an outer circumference of the outer shell, wherein
• the bracket has a cylindrical portion that has a C-shaped cross section with a split in a front portion while holding the outer circumference of the outer shell and a pair of attachment portions that protrudes radially outward from both ends in a circumferential direction of the cylindrical portion and is capable of being attached to a knuckle supporting the wheel,
• the cylindrical portion has an insertion hole that is located in one side portion of the cylindrical portion and through which the protruding portion is inserted, and
• the cylindrical portion has a protection wall that rises from an entire edge of the insertion hole located closer to one of the attachment portions than an axis of the outer shell when viewed at least from the one side portion side of the cylindrical portion.