Discover the top 10 biggest companies in New Zealand by revenue in 2025, including Fonterra, Ebos Group, Fletcher Building, Spark New Zealand, Mainfreight, Meridian Energy, Genesis Energy, Air New Zealand, Contact Energy, and Mercury NZ. Combined, these companies generate a total revenue of $33.2 billion.
1. Fonterra
Industry: food and beverage
Revenue (2025: Q1; 2024: Q2, Q3, Q4): $15,210 Millions
Stock symbol: FCG.NZ
Fonterra is a multinational dairy cooperative headquartered in Auckland, New Zealand. It was founded in 2001. The company operates in more than 100 countries worldwide, making it one of the largest dairy exporters globally. Fonterra’s main activities revolve around the production, processing, and distribution of dairy products, including milk, cheese, butter, and infant formula. Some of its well-known brands include Anchor, Mainland, and Anlene. In 2025, Fonterra has continued to expand its focus on value-added dairy nutrition and sustainability initiatives, investing in innovation and new global partnerships.
2. Ebos Group
Industry: healthcare
Revenue (2025: Q1; 2024: Q2, Q3, Q4): $8,150 Millions
Stock symbol: EBO.NZ
Ebos Group is headquartered in Christchurch, New Zealand, and was founded in 1922. It operates in multiple countries, with a presence in Australia, New Zealand, and several countries in Asia. The company is primarily engaged in healthcare, animal care, and medical products distribution. They offer a wide range of products and services, including pharmaceuticals, medical consumables, and healthcare solutions. Ebos Group also owns and operates various brands, such as Symbion, TerryWhite Chemmart, and Zest Dental Solutions. In 2025, Ebos Group has further expanded its pharmaceutical wholesale and retail footprint in Asia-Pacific and invested in digital health solutions.
3. Fletcher Building
Industry: construction
Revenue (2025: Q1; 2024: Q2, Q3, Q4): $5,570 Millions
Stock symbol: FBU.NZ
Fletcher Building is headquartered in Auckland, New Zealand and was founded in 1909. It operates in multiple countries, with a presence in over 40 countries worldwide. The company is primarily engaged in construction and building materials, offering a wide range of products and services including residential and commercial construction, infrastructure development, and building supplies. Fletcher Building is known for its reputable brands such as Winstone Wallboards, Formica, and PlaceMakers. In 2025, Fletcher Building has increased its focus on sustainable construction methods and digital construction technologies.
4. Spark New Zealand
Industry: telecommunications
Revenue (2025: Q1; 2024: Q2, Q3, Q4): $3,870 Millions
Stock symbol: SPK.NZ
Spark New Zealand is headquartered in Auckland, New Zealand and was founded in 1987. It operates primarily in New Zealand but also has operations in several other countries. The company’s main activities include providing telecommunications and digital services to both residential and business customers. They offer a wide range of products and services such as mobile and fixed-line telephony, internet services, and digital entertainment. Spark New Zealand is a well-known brand in the telecommunications industry. In 2025, Spark has expanded its 5G network coverage and introduced new cloud and cybersecurity services for enterprise clients.
5. Mainfreight
Industry: transportation and logistics
Revenue (2025: Q1; 2024: Q2, Q3, Q4): $3,810 Millions
Stock symbol: MFT.NZ
Mainfreight is a global logistics company headquartered in Auckland, New Zealand, founded in 1978. It operates in over 30 countries, making it a truly international company. Mainfreight specializes in providing a wide range of logistics services, including freight forwarding, warehousing, and distribution. They offer customized solutions to meet the unique needs of their customers. Mainfreight is known for its reliable and efficient services, and it has established itself as a trusted brand in the logistics industry. In 2025, Mainfreight has expanded its e-commerce logistics solutions and strengthened its presence in North America and Europe.
6. Meridian Energy
Industry: energy
Revenue (2025: Q1; 2024: Q2, Q3, Q4): $2,340 Millions
Stock symbol: MEL.NZ
Meridian Energy is headquartered in Wellington, New Zealand, and was founded in 1999. It operates in New Zealand and Australia, with a total of two countries. The company’s main activities include the generation and retailing of electricity, as well as the development and operation of renewable energy projects. Meridian Energy is known for its commitment to sustainability and is one of the largest renewable energy companies in the Southern Hemisphere. In 2025, Meridian has launched new wind and solar projects, further increasing its renewable generation capacity.
7. Genesis Energy
Industry: energy
Revenue (2025: Q1; 2024: Q2, Q3, Q4): $1,860 Millions
Stock symbol: GNE.NZ
Genesis Energy is headquartered in Auckland, New Zealand and was founded in 1999. It operates primarily in New Zealand. The company is involved in the generation, retail, and trading of electricity and gas. Genesis Energy offers a wide range of products and services including renewable energy solutions and energy management services. In 2025, Genesis has accelerated its transition to renewable energy and expanded its electric vehicle charging infrastructure nationwide.
8. Air New Zealand
Industry: transportation
Revenue (2025: Q1; 2024: Q2, Q3, Q4): $2,210 Millions
Stock symbol: AIR.NZ
Air New Zealand is headquartered in Auckland, New Zealand, and was founded in 1940. It operates primarily in New Zealand but also has operations in 19 other countries. The company’s main activities include providing domestic and international air travel services, cargo services, and aviation engineering and maintenance services. Air New Zealand is known for its high-quality service and is recognized as a leading airline in the region. In 2025, Air New Zealand has increased its international routes and invested in sustainable aviation fuel initiatives.
9. Contact Energy
Industry: energy
Revenue (2025: Q1; 2024: Q2, Q3, Q4): $1,670 Millions
Stock symbol: CEN.NZ
Contact Energy is headquartered in Wellington, New Zealand and was founded in 1996. It operates primarily in New Zealand. The company is engaged in the generation, retail, and trading of electricity and natural gas. Contact Energy offers a range of products and services related to energy supply and management. It is known for its commitment to renewable energy and sustainability. In 2025, Contact Energy has launched new geothermal projects and expanded its residential solar offerings.
10. Mercury NZ
Industry: energy
Revenue (2025: Q1; 2024: Q2, Q3, Q4): $1,420 Millions
Stock symbol: MCY.NZ
Mercury NZ, headquartered in Auckland, New Zealand, was founded in 1998. It operates primarily in New Zealand. The company is engaged in the generation and retailing of electricity, as well as the provision of related services. Mercury NZ offers a range of renewable energy products and services, striving to be a sustainable and responsible energy provider. In 2025, Mercury NZ has added new wind generation capacity and enhanced its digital customer experience platform.
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