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In recent decades, the estimation of radionuclide and heavy metal levels in culinary-medicinal mushrooms has been of interest because some of them have proven to be hyperaccumulators of toxic elements. This article presents results on radiocesium (137Cs) activity in fruit bodies of medicinal-culinary mushrooms-Agaricus sylvaticus Schaeff., Chlorophyllum rhacodes (Vitt.) Vellinga, Coprinellus micaceus (Bull.) Vilgalys, Hopple & Jacq. Johnson, Coprinopsis atramentaria (Bull.) Redhead, Vilgalys & Moncalvo, Coprinus comatus (O.F. Mull.) Pers., Fistulina hepatica (Schaeff.) With., Laetiporus sulphureus (Bull.) Murrill, Leccinum scabrum (Bull.) Gray, Macrolepiota procera (Scop.) Singer, Melanoleuca brevipes (Bull.) Pat., Pleurotus ostreatus (Jacq.) P. Kumm., Xerocomellus chrysenteron (Bull.) Sutara, nonedible Echinoderma asperum (Pers.) Bon, and toxic species Agaricus xanthodermus Genev.-collected in 2015, as well as magnesium, manganese, iron, copper, zinc, chromium, nickel, molybdenum, cadmium, selenium, lead, and mercury content in medicinal-culinary species-Armillaria mellea (Vahl) P. Kumm., Ch. rhacodes, C. comatus, Grifola frondosa (Dicks.) Gray, Gyroporus cyanescens (Bull.) Quel., L. scabrum, M. procera, P. ostreatus, and X. chrysenteron-collected during 2016-2017 on the southern outskirts of Kyiv, the capital of Ukraine. The data obtained suggest safe levels of radiocesium and some essential and toxic elements in mushroom fruit bodies. All the investigated species are collective sorbents of magnesium, manganese, copper, and zinc; thus, they represent the source of the intake of these elements in the human body. The species-specific manner of mineral element accumulation was observed. In addition to medicinal values, some species (in particular, M. procera and Ch. rhacodes) are of interest as potential informative bioindicators of heavy metal contamination of the environment.