  In general, the study of gradations has always represented a cornerstone in
algebra theory. In particular, \textit{naturally graded} seems to be the first
and the most relevant gradation when it comes to nilpotent algebras, a large
class of solvable ones. In fact, many families of relevant solvable algebras
have been obtained by extensions of naturally graded nilpotent algebras, i.e.
solvable algebras with a well-structured nilradical. Thus, the aim of this work
is introducing the concept of naturally graded for superalgebra structures such
as Lie and (non-Lie) Leibniz. After having defined naturally graded Lie and
Leibniz superalgebras, we characterize natural gradations on a very important
class of each of them, that is, those with maximal super-nilindex.
