  We study the sensitivity of fixed target experiments to hadronically-coupled
axion like particles (ALPs) produced in kaon decays, with a particular emphasis
on current and upcoming short-baseline neutrino experiments. We demonstrate
that below the kaon decay mass threshold ($m_a < m_K - m_\pi$) kaon decay is
the dominant production mechanism for ALPs at neutrino experiments, larger by
many orders of magnitude than production in psuedo-scalar mixing. Such axions
can be probed principally by the di-photon and di-muon final states. In the
latter case, even if the axion does not couple to muons at tree level, such a
coupling is induced by the renormalization group flow from the UV scale. We
reinterpret prior results by CHARM and MicroBooNE through these channels and
show that they constrain new areas of heavy axion parameter space. We also show
projections of the sensitivity of the SBN and DUNE experiments to axions
through these channels, which reach up to multiple decades higher in the axion
decay constant beyond existing constraints. DUNE projects to have a sensitivity
competitive with other world-leading upcoming experiments.
