Abstract:The chromosome numbers of 3 monotypic genera in Sapindaceae are reported. The chromosome numbers were determined to be 2n=40 for Hondeliodendron Rehd., 2n=28 for Delavaya Franch., and 2n=26 for Eurycorymbus Hand.-Mazz.. All the chromosomes of the three genera are small in size. Chromosome numbers of Handeliodendron Rehd. and Delavaya Franch. are reported for the first time.