The Welsh National Book of Remembrance for the First World War contains the names of 35,000 servicemen and women, as well as members of Welsh Regiments, who lost their lives in the First World War. These individuals are listed according to regiment and battalion alongside the names of those who might well have died alongside them.

Officers; Fourth (Denbighshire) Battalion Officers; Fifth (Flintshire) Battalion Officers; Sixth (Caernarvonshire and Anglesey) Battalion Officers; Seventh (Merioneth & Montgomery) Battalion Officers; First Battalion; Second Battalion; Third Battalion; Eighth Battalion; Ninth Battalion; Tenth Battalion; Eleventh Battalion; Twelth Battalion; Thirteenth Battalion; Fourteenth Battalion ; Fifteenth Battalion; Sixteenth Battalion; Seventeenth Battalion; Eighteenth Battalion; Nineteenth Battalion; Twentieth Battalion; Twenty-first Battalion; Twenty-second Battalion; Twenty-third Battalion; Twenty-fourth Battalion; Twenty-fifth Battalion; Twenty-sixth Battalion; Depot; First Garrison Battalion; Second Garrison Battalion; Third Garrison Battalion; Fourth Garrison Battalion; Fifth Garrison Battalion; Sixth Garrison Battalion; Fourth Battalion; Second-fourth Battalion; Third-fourth Battalion; Fourth Reserve Battalion; Fifth Battalion; Second-fifth Battalion; Third-fifth Battalion; First-sixth Battalion; Second-sixth Battalion; Third-sixth Battalion; Fifth-sixth Battalion; Seventh Battalion; Second-seventh Battalion; Third-seventh Battalion; First-1st Welch Horse Yeomanry; Second-1st Welch Horse Yeomanry