Tritonioidea is a superfamily of small sea slugs, nudibranchs, shell-less marine gastropod mollusks in the clade Dendronotida. Tritonioidea is the only superfamily in the clade Dendronotida. The taxonomy of Bouchet & Rocroi for the clade Dendronotida was largely based on the classification established by Boss in 1982, who in turn based his conclusions on the study by Odhner in 1968.