The matrix isolation of Li, Na, Ca, Mn and Ti atoms in matrices of cyclohexane at temperatures in the range 55 −130°K is shown to produce absorption spectra which correlate well with those of the free atom. These spectra are often found to be simpler than those of the same atoms isolated in the inert gases. The good isolation produced by cyclohexane may make this matrix useful for the study of high temperature reactions between matrix isolated species.