Gaithersburg is a city in Montgomery County, Maryland, United States. The city has an estimated total population of 58,000, making it the fourth largest city in the state behind Baltimore, Rockville, and Frederick. Gaithersburg is located at 398′ North, 7713′ West, to the northwest of Washington DC , and is considered a suburb and a primary city within the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area. Gaithersburg was incorporated in 1878.

Gaithersburg is urbanistically diverse, encompassing a historic Old Town, a new urbanist community called Kentlands, high-rise/low-rise apartments, a shopping mall, and suburban subdivisions.

Panda Programmer is located in Gaithersburg, Maryland.