Pucciniomycotina is a subdivision of fungus within the division Basidiomycota. The group was known as Urediniomycetes until 2006, when it was elevated from a class to a subdivision and named after the largest order in the group, Pucciniales.

The subdivision contains 10 classes, 21 orders, and 38 families. Over 8400 species of Pucciniomycotina have been described; thus, the subdivision contains more than 8% of all described fungi.

Pucciniomycotina appears to be sister to Agaricomycotina, based on maximum-likelihood analysis of six genes.

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