  We report the discovery of a galaxy cluster at z = 1.41. ISCS J143809+341419
was found in the Spitzer/IRAC Shallow Survey of the Bootes field in the NOAO
Deep Wide-Field Survey carried out by IRAC. The cluster candidate was initially
identified as a high density region of objects with photometric redshifts in
the range 1.3 < z < 1.5. Optical spectroscopy of a limited number of objects in
the region shows that 5 galaxies within a ~120 arcsec diameter region lie at z
= 1.41 +/- 0.01. Most of these member galaxies have broad--band colors
consistent with the expected spectral energy distribution of a
passively--evolving elliptical galaxy formed at high redshift. The redshift of
ISCS J143809+341419 is the highest currently known for a
spectroscopically-confirmed cluster of galaxies.
