| XVIII Corps | |
|---|---|
&sq=Qlik&lang=&file=File:XVIII_Corps_WW1.svg) XVIII Corps formation badge. | |
| Active | World War I |
| Country |  United Kingdom |
| Branch | &sq=Qlik&lang=&file=File:Flag_of_the_British_Army.svg){kind=small} British Army |
| Type | Field corps |
| Part of | Fifth Army |
| Engagements | World War I[1] |
The XVIII Corps was a British infantry formation during World War I. It was reactivated, briefly, in Cyprus during World War II as part of a military deception.