DIY or Do It Yourself refers to the practice of fabricating or repairing things on one's own rather than purchasing them or paying for professional repair. The DIY scene we know today is actually a re-introduction (often to city and suburb dwellers) of the old pattern of personal involvement in home or apartment upkeep, or the making of clothing, or maintaining of cars, computers, or any material aspect of living.

Common DIY tasks range from putting up shelves, fitting wardrobes, general repair and maintenance, to more advanced tasks such as DIY audio/video equipment. modifying or upgrading computer equipment, known as modding or tweaking. DIY furniture making. adding rooms, plumbing, rewiring houses - mains power or Cat-5, building a car port or a shed, building a boat or canoe, establishing a rural water system.

Most DIY tasks are within the range of most people who can read and follow instructions, although DIY has been responsible for an increase in injuries at home.