The global geomembranes market is projected to grow from USD 3.39 billion in 2026 to USD 5.20 billion by 2031, representing a 7.5% CAGR, according to MarketsandMarkets. Demand is being supported by mining expansion, stricter environmental regulations, wastewater treatment and water-conservation investments, infrastructure development and the need to prevent leakage and contamination. Asia Pacific was the largest regional market in 2025 with a 38.6% share and is expected to remain the fastest-growing region. HDPE accounted for 52.2% of the market in 2025, while mining is forecast to be both the largest and fastest-growing application, with an 8.2% CAGR. Key companies include Solmax, AGRU America Inc., Naue GmbH & Co. KG, Atarfil geomembranas, Carlisle Construction Materials, PLASTIKA KRITIS, Officine Maccaferri SpA, Holcim Solutions and Products EMEA BV, JUTA a.s. and Viaflex.