Avocado is a high-value fruit commodity whose cultivation needs to be enhanced, one of which is through grafting to combine the superior traits of two different varieties.This study aims to determine the effect of varieties and different scion lengths on the success of avocado plant grafting. This study was conducted using a factorial randomized block design with two factors. The first factor is the variety, which consists of two levels: Cimpedak variety and Moncok Mentaram variety. The second factor is the scion length, which consists of six levels: 5 cm, 7 cm, 9 cm, 11 cm, 13 cm, and 15 cm. This study demonstrated that scion length had a significant effect on the success of avocado grafting, while varietal differences showed no influence. A scion length of 11 cm was the most effective, yielding the highest survival rate with no scion mortality. The combination of the Moncok Mentaram variety and 11 cm scion length produced optimal results in supporting early plant growth.