Lavender aromatherapy is therapy that uses essential oil to help improve or maintain health, uplifting, refreshing as well as relaxed souls and body. The purpose are influence mood to be relaxed and it can decrease elderly level of depression. The study was conducted to proved the effect of giving lavender aromatherapy on elderly depressioin scores in Balai Pelayanan Sosial Tresna Wredha (Balai PSTW) Budi Luhur Yogyakarta. This study was quasy experiment with a pretest posttest control group design. The population of all the elderly who suffered a little depression, medium and heavy in Balai Pelayanan Sosial Tresna Wredha (Balai PSTW) Budi Luhur Yogyakarta with amount 74 elderly on 7 june 2017. The sampling method use pourposive sampling as many as 30 elderly respondents who suffered a little depressions, medium, and heavy divided into two groups 15 elderly as intervention group and 15 elderly as control group.Insrument used GDS-15 (Geriatric Depresion Scale 15-item). Data analyzed by Wilcoxon Signed rank test and Mann Whitney. The results of this research is before treatment average suffered a mild depression with average score 6,66. After the treatment has decreased to mild depression and normal with average score 4,80. This research indicates that there is the effect of lavender aromatherapy to decrease the level of depression to the elderly. Wilcoxon Signed Rank Test indicates that there is the effect of lavender aromatherapy to decrease the level of depression to the elderly p=0,001. The Conclusion of This study shows that, there is the effect of giving lavender aromatherapy to the elderly depression scores at Balai Pelayanan Sosial Tresna Wredha (Balai PSTW) Budi Luhur Yogyakarta.