  We study cylindrically symmetric Abelian wormholes (WhC) in
$(4+n)$-dimensional Kaluza-Klein theory. It is shown that static,
four-dimensional, cylindrically symmetric solutions in $(4+n)$-dimensional
Kaluza-Klein theory with maximal Abelian isometry group $U(1)^n$ of the
internal space with diagonal internal metric can be obtained, as in the case of
a supersymmetric static black hole \cite{Cv}, only if the isometry group of the
internal space is broken down to the $U (1)_e \times U(1)_m$ gauge group; they
correspond to dyonic configurations with one electric $(Q_e)$ and one magnetic
$(Q_m)$ charge that are related either to the same $U(1)_e$ or $U(1)_m$ gauge
field or to different factors of the $U (1)_e \times U(1)_m$ gauge group of the
effective 6-dimensional Kaluza-Klein theory. We find new exact solutions of the
6-dimensional Kaluza--Klein theory with two Abelian gauge fields, dilaton and
scalar fields, associated with the internal metric. We obtain new types of
cylindrically symmetric wormholes supported by the radial and longitudinal
electric and magnetic fields.

General Relativity and Quantum Cosmology