203rd Infantry Brigade was a Home Defence formation of the British Army during the Second World War.

The brigade was formed as 203rd Independent Infantry Brigade (Home) for service in the United Kingdom on 11 October 1940 by No 3 Infantry Training Group in the South West Area (later Devon and Cornwall County Division) of Southern Command.

[1][2] Home brigades had a purely static defence role.

[1][6][7] 203rd Brigade was composed as follows:[1] As part of the Devon and Cornwall County Division: Between 30 June and 19 July 1941, the 7th East Yorks, 6th DCLI and 8th Beds & Herts were all transferred to reconstitute 73rd Independent Bde, which took over all the static units in Cornwall.

[15] This left 203rd Bde with only the 8th Duke of Wellington's under command, but the following units were added to it over time:[1] As part of 77th Division: As part of 45th Division (renamed as 134th Infantry Brigade) to end of war: The following officers commanded the brigade:[7]