  We investigate multiple electromagnetically induced transparency (EIT) in a
waveguide quantum electrodynamics (wQED) system containing an atom array. By
analyzing the effective Hamiltonian of the system, we find that in terms of the
single-excitation collective states, a properly designed $N$-atom array can be
mapped into a driven ($N+1$)-level system that can produce multiple EIT-type
phenomenon. The corresponding scattering spectra of the atom-array wQED system
are discussed both in the single-photon sector and beyond the single-photon
limit. The most significant feather of this type of EIT scheme is
control-field-free, which may provide an alternative way to produce EIT-like
phenomenon in wQED system when external control fields are not available. The
results given in our paper may provide good guidance for future experiments on
multiple EIT without a control field in wQED system.
