  We present the analysis of 2.1 years of Fermi/LAT data on 491 Seyfert
galaxies detected by the Swift/BAT survey. Only the two nearest objects, NGC
1068 and NGC 4945, which were identified in the Fermi First-year Catalog, are
detected. Using the Swift/BAT and radio 20 cm fluxes, we define a new
radio-loudness parameter $R_{X, BAT}$ where radio loud objects have $\log R_{X,
BAT} > - 4.7$. Based on this parameter, only radio loud sources are detected by
Fermi/LAT. An upper limit to the flux of the undetected sources is derived to
be $\sim 2 \times 10^{-11}$ photons cm$^{-2}$ s$^{-1}$, approximately seven
times lower than the observed flux of NGC 1068. Assuming a median redshift of
0.031, this implies an upper limit to the $\gamma$-ray (1--100 GeV) luminosity
of $\lesssim 3 \times 10^{41}$ erg s$^{-1}$. In addition, we identified 120 new
Fermi/LAT sources near the Swift/BAT Seyferts with significant Fermi/LAT
detections. A majority of these objects do not have \bat counterparts, but
their possible optical counterparts include blazars, FSRQs, and quasars.
