The aim of the study is to assess the diagnostic value of Whole Body DWI in the staging and assessment of treatment response in lymphoma as a viable alternative in comparison to FDG PET/CT. a prospective study enrolled 20 lymphoma patients including aggressive and indolent subtypes D for staging or treatment response assessment. The lesions detected by MRI-DWI were evaluated with PET/CT as the reference standard. The impact of DWI and PET/CT on disease staging was analyzed according to Ann Arbor. The mean age at diagnosis was 58.44 (SD ± 5.16) years. 90% (18/20) had NHL. 6/20 patients were recruited for treatment response. The other 14 patients had 100% agreement in staging; 9were stage IV, 1 stage III, 1 stage II, and 3 were stage I disease. The agreement was moderate (κ = 0.57)for Total nodal sites and very good (κ = 0.84) for extranodal sites. Discordance in extranodal sites in 2 cases included: splenic infiltration at DWI on one and focal Bone Marrow infiltration at FDG PET/CT on the other. Individual sites showed a good agreement κ> 0.69 except for hilar region with a poor agreement (κ = 0.35) but this did not impact staging.DWI is a good alternative to FDG PET/CT and can be used in varied lymphomas and as an alternative for radiation-free imaging due to its good level of agreement to the standard reference. It showed a good evaluation especially of extranodal sites and also nodal sites except for hilar LNs where FDG PET/CT remains superior