Basidiomata of a hitherto undescribed Candolleomyces species were collected during a macrofungal foray in North Vietnam. They grew on deciduous deadwood in the Southeastern part of the Cúc Phương National Park Vietnamese: Vườn quốc gia Cúc Phương), Ninh Bình Province. The new species Candolleomyces eurysporus, sp. nov., is characterized by broadly ellipsoid to broadly ovoid basidiospores [5.5–7.0 × 4–5(–6) µm] without visible germ pore, utriform to ventricose-clavate cheilocystidia, heteromorphic caulocystidia and the absence of pleurocystidia and pileocystidia. Based on an isolated pure culture, the genome was sequenced and a full ribosomal RNA operon including 18S, internal transcribed spacer 1 (ITS), 5.8S, ITS2 and 28S rRNA gene annotated. Phylogenetic analysis confirmed the taxonomic placement of C. eurysporus within the C. sulcatotuberculosus species clade.