Sn(iv) complexes, i.e., di-n-butyltin dichloride, n-butyltin trichloride, di-n-butyltin dilaurate, n-butyl stannoic acid, and di-n-butyl-oxo-stannane, were tested as catalysts for the glycerolysis of triacylglycerides (TAGs) to produce monoacylglycerols (MAGs) and diacylglycerols (DAGs).