Mae Llyfr Cofio Cenedlaethol Cymru o'r Rhyfel Byd Cyntaf yn cofnodi enwau 35,000 o filwyr , yn ddynion a merched o Gymru ynghyd ag aelodau o gatrodau Cymreig, a gollodd eu bywydau yn y Rhyfel Byd Cyntaf. Rhestrwyd yr unigolion yma fesul catrawd a bataliwn ochr yn ochr ag enwau'r rhai a allai'n hawdd fod wedi marw gyda nhw.

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