あいや
Aiya Co., Ltd. is a fifth-generation family-owned matcha producer and wholesaler headquartered in Nishio, Aichi Prefecture — Japan's premier matcha-growing region. Founded in 1888 by Aijiro Sugita (whose shop sold both indigo dyes and tea, lending the company its name from the Japanese word for indigo, "ai"), Aiya has grown into the world's largest matcha manufacturer. The company operates 1,000+ stone mills running 24 hours a day across four Japanese factories, and six overseas subsidiaries spanning the USA, Germany, Austria, China, and Thailand. Aiya was the first matcha producer to obtain JONA organic certification (1997) and ISO 22000 food safety certification (2008), and has maintained long-term partnerships with the same farming families across multiple generations. Its retail arm, Saijoen (西条園), offers ceremonial and culinary matcha through a flagship café in Nishio and an online shop.
Brand story
Aiya helped define Nishio as a modern matcha powerhouse through scale, export orientation, quality control, and category expansion from ceremonial to food-industry matcha.
Hana no Mine
Kaze no Kaori
Ten no Midori
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Aiya Co., Ltd. — Company Profile
Supports: Founded 1888, CEO Takeo Sugita, 264 employees, capital 30M yen, 4 Japan factories, 6 overseas subsidiaries
Supports: 1888 founding by Aijiro Sugita, history milestones, organic certification 1997, ISO 22000 2008, 5th generation family business
Supports: Product lineup: usukicha, koicha, organic matcha grades with prices
Uji vs Yame vs Nishio Matcha: What's the Difference?
Uji, Yame and Nishio matcha compared on flavor, price and stock — standardized flavor scores and per-gram prices from our own tracker, not opinion.
Aiya Matcha: Price Per Gram Across the Full Lineup
Aiya is the world's largest matcha manufacturer — 1,000+ stone mills, four factories, JONA organic certified since 1997. All 10 tracked blends in stock, $0.54/g to $2.63/g. None carry flavor scores yet — here's what the price data alone tells you.
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