Private company

Hill & Knowlton

Logo: Hill+Knownlton Strategies, Public domain, via Wikimedia Commons3

Public relations consulting company

Hill & Knowlton is an American global public relations consulting company, headquartered in New York City. The firm has over 80 additional offices in more than 40 countries. The company was founded in Cleveland, in 1927 by John W. Hill and is now owned by the WPP Group and operates under the brand Burson.2 Its chief executive is Jack Martin.1 It is part of WPP plc.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 20, 2026.

Overview

1927Founded1
  • Industrypublic relations1
  • HeadquartersNew York City1
  • Founded inCleveland1
  • Websitehillandknowlton.com
  • Legal formjoint-stock company1

Hill & Knowlton is an American global public relations consulting company, headquartered in New York City. The firm has over 80 additional offices in more than 40 countries. The company was founded in Cleveland, in 1927 by John W. Hill and is now owned by the WPP Group and operates under the brand Burson.2

Corporate structure

Hill & Knowlton is part of a group headed by WPP plc. 74 entities, 16 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • WPP plc London, United Kingdom
    • Hill & Knowlton New York City
    • WPP JUBILEE LIMITED London, United Kingdom
      • Syzygy (Unternehmen) Bad Homburg vor der Höhe, Germany
        • Syzygy Performance Marketing GmbH Subsidiary · Bad Homburg vor der Höhe, Germany
      • WPP FINANCE 2010 Subsidiary · London, United Kingdom
      • WPP FINANCE 2016 Subsidiary · London, United Kingdom
    • Bates 141 Subsidiary · Hong Kong
    • Burson Subsidiary · New York City
    • Cohn & Wolfe Subsidiary · New York City
    • Essence Global Subsidiary
    • FGS Global Subsidiary
    • Kantar Group Subsidiary · London, United Kingdom
    • Landor Associates Subsidiary · San Francisco
    • Ogilvy Subsidiary · New York, New York, United States
    • Peclers Paris Subsidiary · Paris
    • Scholz & Friends Subsidiary · Berlin
    • VMLY&R Subsidiary · Kansas City
    • Xaxis Subsidiary · New York City
    • Young & Rubicam Subsidiary · New York City
    • Russell Square Holding B.V. Subsidiary · 100% · Rotterdam, Netherlands
      • QUASAR MEDIA PRIVATE LIMITED Subsidiary · New Delhi, India
      • WPP Business Services, Inc Subsidiary · London, United Kingdom
    • BATES INDIA PRIVATE LIMITED Subsidiary · Mumbai, India
    • BRAND DAVID COMMUNICATIONS PRIVATE LIMITED Subsidiary · Mumbai, India
    • Burson Cohn & Wolfe Subsidiary · Brussels, Belgium
    • EssenceMediacom Subsidiary · Germany
    • Finsbury Glover Hering Subsidiary
    • GREY WORLDWIDE (INDIA) PRIVATE LIMITED Subsidiary · Mumbai, India
      • BATEY INDIA PRIVATE LIMITED Subsidiary · Mumbai, India
    • Group SJR Subsidiary
    • GroupM Proprietary Media Company Limited (บริษัท กรุ๊ปเอ็ม โพรพริเอทารี มีเดีย จำกัด) Subsidiary · Bangkok, Thailand
    • GROUPM TRADING BELGIUM Subsidiary · Brussels, Belgium
    • and 29 more

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

The story

Founded by John W. Hill in 1927, in Cleveland.1

20th century

The company that became Hill & Knowlton Strategies was founded in 1927 by newspaper reporter and businessman John Hill in Cleveland, Ohio. Hill's first two clients were Cleveland-based Union Trust Company, and the Otis Steel Company.

When Union Trust Company was shut down by the Great Depression in 1933, Hill hired its former director of advertising and publicity Don Knowlton, and they together established Hill & Knowlton of Cleveland. Hill moved to New York City in 1934 to open a new Hill & Knowlton office. Knowlton remained in Cleveland and operated the original location until his retirement in 1964. Hill served as chairman and chief executive until 1962, but remained on the firm's policy committee, and continued to go into the office until shortly before his death in 1977.

The company represented the dairy industry during congressional debates on margarine regulation in the late 1940s.

Other early clients included the tobacco industry, as well as many other industries including the aircraft industry, the American Shipbuilders Council, the National Retail Dry Goods Association, the National Fertilizer Association and soap producers.

When Hill died in 1977, the company had 560 employees, with 36 offices in the United States and 18 abroad. Clients included Texaco Inc., Warner-Lambert, Procter & Gamble, Gillette, and the Business Roundtable.

The firm was acquired in 1980 by the JWT Group, one of the largest advertising agencies at the time. Following the acquisition, Hill & Knowlton continued to operate as an independent entity under the JWT Group.

The company expanded to China in 1984, and acquired both Gray & Company and Carl Byoir & Associates, two public relations firms with a national presence in the United States, in 1986.

JWT was acquired by the WPP plc, a London-based marketing and communications holding company, in 1987. In 1989, Hill & Knowlton acquired Canada's largest PR agency, the Public Affairs Resource Group.

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In 1990 Hill and Knowlton was hired by the United States Conference of Catholic Bishops (USCCB) to launch a campaign to persuade Catholics and non-Catholics to oppose abortion rights for women. A third of its employees at headquarters signed a letter of protest.

21st century

The firm continued to expand through acquisitions in the 2000s, including the acquisition of a portion of Argentine company Vox Consulting in 2000, Miami-based public relations agency SAMCOR in 2002, and a majority ownership of the Hong Kong-based Rikes Communications in 2008.

In 2009, the firm opened its first office in Nairobi in partnership with Kenyan company Scangroup. In 2010, the company opened three new offices in China as well as new offices in India and Colombia.

In January 2011, Hill & Knowlton announced a merger with Public Strategies, another WPP company founded in Austin, Texas in 1988. In December 2011, the firm was rebranded as "Hill+Knowlton Strategies." The company has since been rebranded to "Hill & Knowlton" before joining the Burson umbrella.

Jack Martin, founder of Public Strategies, oversaw this rebranded company from 2011 until 2019. He was succeeded by AnnaMaria DeSalva.

In August 2021, Hill & Knowlton China, the Chinese arm of the company, announced new strategic advisory services to help local businesses with environmentally friendly business strategies. The new services were part of Hill & Knowlton's support for the COP15 (UN Biodiversity) conference, which was held in Kunming, China, in October 2021.

In October 2022, the firm became the U.S. public relations agency of record for Glanbia Performance Nutrition. In 2023, the company was chosen by Costa Coffee to improve consumer communications across the UK. Costa Coffee had 2700 stores across the UK and 1100 outlets in 45 countries. Hill & Knowlton Strategies was also selected to provide PR and social media for Hill's Pet Nutrition.

From 2021 to 2023, Hill & Knowlton grew more than 25%. In September 2022, the firm acquired JeffreyGroup. The company is based in Miami but has offices in Mexico, Brazil, and Argentina. This expanded Hill & Knowlton's presence in Latin America, where it already owned Grupo Ideal, based in Brazil.

In March 2023, WPP acquired Germany based healthcare public relations agency 3K Agentur für Kommunikation.

In November 2023, Hill & Knowlton launched its global intelligence and technology unit. In the same month, Hill & Knowlton also announced its partnership with Pendulum Intelligence to produce a tool that will help clients combat disinformation.

From Wikipedia’s article on Hill & Knowlton, shared under CC BY-SA 4.0.4

Leadership

Who has led Hill & Knowlton, and when. Pick a name to see everywhere that person has worked.

Products and brands

The firms' clients reportedly represent fifty percent of Fortune 500 companies. The company serves a variety of industries including automotive, banking and finance, energy, governments, sports marketing, healthcare and pharmaceuticals, technology communications, consumer goods and services, food and beverage, and the travel, leisure, and tourism industry. The company has also worked with governing bodies, federations, and sponsors for every Olympic Games since the 2000 Summer Olympics in Sydney. They also worked on the World Health Organization-funded COVID-19 campaign.

From Wikipedia’s article on Hill & Knowlton, shared under CC BY-SA 4.0.4

Subsidiaries and ownership

Parent company

Owners

From Wikidata.1

Timeline

  1. 1927Founded Founded in Cleveland1

Sources

The numbers on this page point here. Each one links to the record it came from.

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