Heritabilities of weaning weight, yearling weight and clean fleece weight for range Romnelet sheep were estimated by the intra-sire regression of daughter on dam from data adjusted for year effects, age of dam, type of birth and rearing and age of lamb or yearling ewe. The data from which each estimate was calculated were collected over a 12-year period.The estimate for weaning weight based on 694 daughter-dam pairs (26 sire groups) was 0.28 ±.09. For yearling weight an estimate of 0.37 ±.11 was obtained from 394 daughter-dam pairs (34 sire groups). Five hundred and thirty-seven daughter-dam pairs (27 sire groups) provided an estimate of 0.48 ±.08 for clean fleece weight.