An enzyme-linked immunosorbent assay (ELISA) was developed for the serodiagnosis of swine toxoplasmosis. The results of the ELISA were interpreted as percentage (% ELISA) and ELISA titer and were compared with results of the dye test, indirect fluorescent antibody test, and indirect hemagglutination test. The results obtained from both the % ELISA and ELISA titer directly correlated with the dye test results. The ELISA is a rapid, sensitive, and readily performed serologic test that should be ideal for examining (screening) swine for toxoplasmosis.