[en] The decays of 8.5-min ⁵³Fe/supg/ and 2.5-min ⁵³Fe/supm/ have been studied with a variety of γ and β⁺ detectors in many different singles and coincidence configurations. States in ⁵³Mn populated by ⁵³Fe/supg/ decay were found to lie at 0 (J/sup pi/ = 7/2^-), 377.9 (5/2^-), 1288.0 (3/2^-), 1619.9 (9/2^-), 2273.5 (5/2^-), 2685.6 (7/2^-), 2946.6 (9/2^-), 3126.7 (9/2^-, 7/2^-, 5/2^-), and 3248.0 keV ([9/2]^-). States in ⁵³Fe populated by 3040.6-keV (19/2^-) ⁵³Fe/supm/ decay were confirmed at 0 (7/2^-), 1328.1 (9/2^-), and 2339.6 keV (11/2^-). In addition, a 3040.6-keV E6 and a 1712.6-keV M5 transition were found to compete with the 701.1-keV E4 isomeric transition in deexciting ⁵³Fe, this being the first observation of such high multipolarities. The E6 has an intensity of 6.0 times 10/sup -4/ and the M5 an intensity of 1.3 times 10/sup -2/ relative to the E4 transition. The E4, M5, and E6 transitions are retarded by respective factors of 7.6, 4.2, and 4.3 with respect to single-particle estimates and by somewhat larger factors with respect to simple shell-model estimates