Alternating may refer to:

Mathematics Alternating algebra, an algebra in which odd-grade elements square to zero Alternating form, a function formula in algebra Alternating group, the group of even permutations of a finite set Alternating knot, a knot or link diagram for which the crossings alternate under, over, under, over, as one travels along each component of the link Alternating map, a multilinear map that is zero whenever any two of its arguments are equal Alternating operator, a multilinear map in algebra Alternating permutation, a type of permutation studied in combinatorics Alternating series, an infinite series in which the signs of the general terms alternate between positive and negative

Electronics Alternating current, a flow of electric charge that periodically reverses direction

Other Alternating turns, the process by which people in a conversation decide who is to speak next

See also Alternate bass Alternative (disambiguation)