  Superconductivity in materials whose crystal structure lacks inversion
symmetry is a prime candidate for unconventional superconductivity. A new
noncentrosymmetric compound Zr$_{3}$Ir crystallizes in a tetragonal $ \alpha
$-V$_{3} $S structure. The magnetization, specific heat and muon spin rotation
confirm s-wave superconductivity, having a transition temperature T$_{c}$ = 2.3
K. Muon spin relaxation confirms the preservation of time reversal symmetry in
the superconducting ground state.
