The Small Business Administration (SBA) is a United States government agency that provides support to small businesses.

The mission of the Small Business Administration is "to maintain and strengthen the nation's economy by enabling the establishment and viability of small businesses and by assisting in the economic recovery of communities after disasters."

The SBA makes loans directly to businesses and acts as a guarantor on bank loans. In some circumstances it also makes loans to victims of natural disasters, works to get government procurement contracts for small businesses, and assists businesses with management, technical and training issues.