Growth often comes with change, and Moore Global believes its biggest opportunities are still ahead. The global accounting, audit, and advisory network has appointed Vivienne Muir as its new Chief Executive Officer, marking the beginning of a new phase focused on strengthening member firms, expanding advisory services, and increasing collaboration across its international network. Having previously served as Chief Operating Officer, Muir now takes on the leadership role with a clear vision for the future, built on the network’s recent growth and global reach.
Vivienne Muir Takes Over as CEO
Moore Global officially announced Vivienne Muir as its new CEO, succeeding to the top leadership position after serving as Chief Operating Officer. During her time as COO, she helped support the network’s international expansion and operational development.
Today, Moore Global operates through more than 234 independent member firms with over 37,000 professionals working across 568 offices in 119 countries. The network reports combined annual revenues of more than US$5.3 billion, making it one of the world’s largest accounting and advisory networks.
Muir’s appointment comes as the organization prepares for its next stage of growth while continuing to support businesses of different sizes through accounting, audit, tax, and advisory services.
Listening to Member Firms First
Rather than introducing immediate changes, Muir said she spent her first weeks as CEO listening to leaders from member firms across the global network. According to her, these conversations provided valuable insight into the challenges and opportunities firms are experiencing in different markets.
She said the discussions reinforced her confidence that Moore Global is well positioned for future growth. Muir also noted that member firms are seeing changing client expectations, creating new opportunities for the profession and the wider network.
Growth Strategy Focuses on Collaboration
According to Muir, Moore Global’s strategy is built around helping member firms grow while strengthening collaboration across countries and regions.
She said the organization is now moving from listening and planning to putting its strategy into action. The goal is to create practical opportunities for member firms by encouraging greater knowledge sharing, stronger international connections, and expanded advisory capabilities.
Muir believes the network’s greatest strength lies in its ability to combine local expertise with global collaboration. She said this approach allows member firms to better support clients operating in increasingly connected markets.
Building on a Strong Foundation
Muir said Moore Global is entering this new phase from a position of strength. She pointed to the network’s experienced professionals, established client relationships, and broad international presence as important advantages for future development.
She also emphasized that the organization intends to preserve the entrepreneurial culture of its independent member firms while creating more opportunities for them to work together across borders.
According to Muir, the network’s strongest growth still lies ahead, supported by closer collaboration and continued investment in advisory services that respond to evolving client needs.
A Global Network with Local Expertise
Moore Global serves businesses ranging from privately owned companies to multinational organizations through its global network of independent member firms. Its services include audit, accounting, tax, advisory, outsourcing, and business consulting.
By combining international resources with local market knowledge, the organization helps clients address financial, regulatory, and business challenges in different regions around the world.
The network continues to expand its capabilities while maintaining the independence of its member firms, allowing them to deliver services that reflect both global standards and local expertise.
Looking Ahead
With Vivienne Muir leading the organization, Moore Global is entering a new stage focused on sustainable growth, stronger collaboration, and enhanced support for its member firms. The network’s leadership believes that its international presence, experienced professionals, and commitment to working together position it well for the future.
As Moore Global begins this new chapter, Muir has made it clear that listening to member firms, strengthening global connections, and helping clients meet changing business needs will remain at the center of the organization’s strategy. Based on the network’s recent progress and its global footprint, Moore Global believes its strongest growth still lies ahead.

