Coastal boulders represent important evidences of past storms and tsunamis involving extreme waves. Evaluating the frequency of these past events implies being able to date their emplacement. We determined for the first time on the Cuba Island the age of emplacement of coastal boulders on the low lying coastal terrace at three sites. On the first site near Trinidad, one overturned boulder was dated using a multiple dating approach with 36Cl cosmogenic method giving a surface exposure age and with 230Th/U method yielding an age of a post-depositional secondary calcite flowstone on this boulder. In the second site in Matanzas, we used the 36Cl method on the topside of the boulder and 230Th/U method on barnacles attached to the boulder. Results give an age of 7 603 ± 3 076 yr (230Th/U age) and 9 272 ± 793 yr (36Cl age) for the boulder of the first site and an age of 381 ± 381 yr (230Th/U age) and 1 756 ± 616 yr (36Cl age) for the boulder of second site. In the third site, in Isla de la Juventud, we test the 36Cl dating on three overturned boulders using two samples on the topside for each of them. Two out of three boulders were dated at 1 170 ± 315 years and 1 525 ± 292 yrs. It is therefore possible to interpret the emplacement of these two boulders by a single event.