Abstract Hydrostannation of 1-alkynols leads to the formation of the corresponding triorganostannylalkenols in good yields. The main product is the trans-isomer, while cis-and α-products are formed in lower yields. In some cases the stannyl alkenols can be further hydrostannated to give distannyl alkanols. 13 C and 119 Sn NMR data for the organotin compounds are presented and discussed.