The inappropriate disposal of sugarcane green waste (SGW) frequently results in environmental problems. The use of sugarcane green waste SGW as sheep feed presents a sustainable alternative; nonetheless, its impact on productivity, meat, and milk needs additional research. This study aimed to evaluate the effects of SGW inclusion on growth performance, carcass characteristics, meat quality, and milk production in sheep using a meta-analysis of published studies. Studies were sourced from BASE, CABA, JSTOR, PubMed, Scopus, and WoS, covering publications from 1981 to 2025. The inclusion criteria required original research articles published in peer-reviewed journals that employed a randomized controlled design. A total of 26 articles met these criteria. The meta-analysis utilized a linear mixed model (LMM), while the intraclass correlation coefficient (ICC) and H2-statistics were applied to assess heterogeneity. The inclusion of SGW significantly improved average daily gain (ADG) and feed conversion ratio (FCR; p