Best fractional COOs for B2B services companies in the US

3 firms and practitioners offer fractional COO work for B2B services companies in the US. First on the list are TechCXO, Trinity One Consulting and InterimExecs. One publishes a monthly fee: $8,000 a month at Trinity One Consulting. The rest quote.

Updated 21 Oct 2026 Listed 3 Order published rule

A fractional COO runs the operating cadence, turns the founder's priorities into accountable owners and fixes the processes that break as headcount grows.

How this list is built. Every firm and practitioner here offers fractional COO work on its own site, names B2B services companies among its clients and serves the US. Order is editor's pick, then listings that name the industry, then a published fee, then name. Nobody pays to appear or to move up. Full methodology.