Aim: We have planned to study the relationship between zinc (Zn) plasma levels, as well as pneumonia criteria, and zinc in healthy children younger than 2 years of age compared to pediatric patients diagnosed with pneumonia and admitted to a hospital. Materials and methods: The study enrolled 25 patients of 0-24 months referring to our hospital's pediatric clinic, who were then diagnosed with bronchopneumonia based on the World Health Organization diagnostic criteria and admitted to suckling children clinic due to inability to receive out-patient treatment, and 10 healthy children of the same age group, whose physical examinations revealed no pathological findings. Results: There was no difference between the groups in terms of age and gender distribution (p > 0.05). The control group included in the study showed a significantly higher mean duration of breast milk intake compared to the patient groups (p<0.001). WBC values obtained from the patient group was significantly higher than that of the control group (p<0.001). Zn and iron (Fe) values as determined in the control group enrolled in the study were significantly higher compared to the patient group (p<0.01). Mean total protein in the control group was found to be significantly higher versus that of the patient groups (p<0.05). With regard to the r values of correlation coefficients of the subjects enrolled in the study, a slightly positive correlation was observed between Zn levels and iron levels (r=0.457). Conclusion: It was concluded that infections, particularly pneumonia, which present a serious issue both in our country and developing countries, may be developed more commonly among children with zinc deficiency.