This latest ranking marks the 14th time Deloitte has topped the list, a streak the firm attributes to a multidisciplinary model designed to navigate increasingly complex market environments. Kwasi Mitchell, leader of Global Consulting Services, Technology & Transformation, noted that the firm’s performance is fueled by an accelerated integration of AI and technology-driven transformation, spanning cybersecurity, human capital, and operational efficiency.
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Deloitte Retains Top Global Consulting Spot in Gartner Market Share Report
For the ninth consecutive year, Deloitte has secured the number one position among global consulting service providers by revenue. According to the 2026 Gartner Market Share report, the firm achieved 5.3% growth, reaching a total of US $41.6 billion in the consulting sector throughout 2025.
The firm’s growth was bolstered by sustained client demand for cloud modernization and data advisory services. Nicolai Andersen, leader of Global Strategy, Risk & Transactions, stated that clients are prioritizing trusted advisors capable of delivering concrete sector insights and execution strategies to maintain a competitive advantage. These results arrive as the organization continues to leverage its global network, which now encompasses over 470,000 professionals across 150 countries.
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