51°29′05″N 0°06′08″E / 51.4848°N 0.1022°E / 51.4848; 0.1022

A209
Route information
Length	2 mi (3.2 km)
Major junctions
North end	Plumstead
Major intersections	A206 A207
South end	Welling
Location
Country	United Kingdom
Constituent country	England
Road network
Roads in the United Kingdom Motorways A and B road zones

The A209 road is a 2-mile (3.2 km) route in southeast London, England. It connects Plumstead in the north with Welling in the south, passing through East Wickham. It is known as Wickham Lane at the northern end in the Royal Borough of Greenwich and Upper Wickham Lane at the southern end in the London Borough of Bexley. The entire route is served by the London Buses route 96.

The northern section, within Greenwich, is known as Wickham Lane. It begins at 'Plumstead Corner', a junction with the A206 road Plumstead High Street. It passes into Bexley at Plumstead Cemetery and forms the boundary between Greenwich and Bexley for a short distance.

Within Bexley it is known as Upper Wickham Lane. It ends at a junction with the A207 road at Welling Corner, after passing under the Bexleyheath Line.