KEY-FINDINGS : People in Nigeria are at risk of exposure to mycotoxins (aflatoxins and fumonisins) which both have potential risk to human and animal health We find evidence that many maize products (51.7% of our samples) had total aflatoxin levels above the regulatory limits in Nigeria while 12.93% of the samples contained total fumonisin levels higher than the United States regulatory limit Aflatoxin and fumonisin contamination in maize products extend beyond production to storage and final food products Adequately addressing the mycotoxin challenge requires consideration of the entire maize value chain