Haematological responses of broiler chickens fed garlic-based and ginger-based diets were investigated. One hundred and twenty chicks were used in the investigation. The chicks on arrival at the site of study were brooded and similarly managed for 4 weeks to fully adapt them to their environment. At the end of the 4 weeks brooding period, the birds were randomly assigned to four dietary treatments of 30 birds/treatment and 3 replicates of 10 birds/replicate as: control or treatment 1 (T1, contained no garlic or ginger), treatment 2 (T2, contained 10g of ginger), treatment 3 (T3, contained 10g of garlic) and treatment 4 (T4, contained 5g of garlic + 5g of ginger)/kg of diet. The animals were fed these garlic-based and ginger-based diets for 4 weeks. 9 birds from each treatment group were sacrificed and their blood collected into treated ethylene diamine tetra-acetic acid (EDTA) tubes for analyses for: packed cell volume (PCV), haemoblobin (Hb), red blood cell (RBC), white blood cell (WBC) and their differentials: neutrophil (NEU), lymphocytes (LYM), monocytes (MON), eosinophils (EON) and basophil (BAS). There were no differences (P > 0.05) in the PCV and RBC for all treatment groups. T4 significantly (P < 0.05) had lower value of Hb compared to T1, T2 and T3 birds that had similar (P > 0.05) higher values. Furthermore, birds of T2 had significantly (P < 0.05) highest count of WBC whereas T1 and T3 animals had similar counts with T4 animals showed significantly (P < 0.05) the lowest count. However, all the positive control treatment groups had significantly (P < 0.05) higher values compared with the T1. It was concluded that dietary ingestion of garlic and ginger improved some haematological parameters of broiler chickens, such as WBC, LYM and OEN.