| 170th (2/1st North Lancashire) Brigade | |
|---|---|
| Active | November 1914–July 1919 November 1943–April 1944 |
| Country |  United Kingdom |
| Branch | _Brigade&sq=&lang=&file=File:Flag_of_the_British_Army.svg){kind=small} British Army |
| Type | Infantry Brigade |
| Role | Infantry and deception |
| Part of | 57th (2nd West Lancashire) Division |
170th (2/1st North Lancashire) Brigade was a 2nd-Line infantry formation of the British Territorial Force raised during the First World War that served on the Western Front. The brigade's number was also used for deception purposes during the Second World War.