The Shamrock Companies Email Format

Advertising ServicesOhio, United States51-200 Employees

Based in Westlake, Ohio, The Shamrock Companies is a mid-sized advertising services firm offering full-service, integrated marketing support. With more than three decades of experience, it provides strategic marketing, creative design, premium and promotions, fulfillment, and data management to clients across the United States.

The company has expanded through acquisitions, including EnForm Graphic Productions in 2020 and Innovative Business Products in 2023, broadening its capabilities in marketing, technology, and project management. Through its Shamrock Cares program, it partners with One Tree Planted to fund tree planting—55 trees for every order from its sustainable product line. These developments reflect ongoing expansion and engagement in environmental initiatives.

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