Boston Millennia Partners is a venture capital firm based in Boston, Massachusetts, specializing in providing private equity financing to high-growth companies in the healthcare and business services sectors. Established in 1997, the firm emerged from Boston Capital Ventures, with its founding partners bringing over a century of combined private equity experience to the investment process. Over the years, Boston Millennia Partners has managed nine separate investment partnerships, with assets under management exceeding $700 million.

The firm's investors include institutions, corporate pension programs, non-profit foundations, and high-net-worth family offices. Their portfolio boasts over 100 individual investments and 300 add-on acquisitions spanning more than two decades. Notable investments include PAREXEL International, GlycoFi (acquired by Merck), Ilex (acquired by Genzyme), Bright Horizons, Verio Inc. (acquired by NTT), Odyssey Logistics, Arthrosurface, Athenix (acquired by Bayer CropScience), P&H Solutions (acquired by ACI Worldwide), Nexidia, Inc., MedAptus, Inc., and Hotjobs.com (acquired by Yahoo!)