

1895
October
- Hakuhodo founded by Hironao Seki at Nihonbashi-Honshiroganecho, Tokyo, as an advertising space broker for educational magazines
1955
April
- Company name changed to Hakuhodo Incorporated
1960
December
- McCann-Erickson Hakuhodo Co., Ltd. established
1973
May
- Hakuhodo establishes first overseas office, Hakuhodo Malaysia Sdn. Bhd.
September
- Thai Hakuhodo Co., Ltd. established
1974
March
- Hakuhodo Singapore Pte. Ltd. established
1977
November
- Hakuhodo Deutschland GmbH established
1981
March
- Sei-katsu-sha Insight philosophy announced in line with establishment of Hakuhodo Institute of Life and Living, Inc. (HILL)
1982
June
- “Menu of Lights” commercial for Matsushita Electric Industrial Co., Ltd. wins Grand Prix at Cannes Lions International Advertising Festival
1988
April
- Hakuhodo Hong Kong Ltd. established
September
- Hakuhodo (Bangkok) Co., Ltd. established
1989
June
- Hakuhodo France S.A. established
July
- H&Y Communications Inc. established in Taiwan
1990
- Hakuhodo instrumental in developing and managing J.League, Japan's professional soccer league
1993
June
- “Hungry?” commercial for Nissin Food Products Co., Ltd. wins Grand Prix at Cannes Lions International Advertising Festival
December
- All stock held in McCann-Erickson Hakuhodo transferred to IPG, thereby dissolving the joint venture

1996
September
- Shanghai Hakuhodo Advertising Co., Ltd. established as a joint venture with Shanghai Advertising Corporation
1997
December
- Hakuhodo Inc. Ho Chi Minh Representative Office established in Vietnam
1998
October
- Beijing Hakuhodo established as a branch of Shanghai Hakuhodo Advertising Co., Ltd.
1999
September
- Media Intelligence Co., Ltd. established in Thailand
Capital investment in UK advertising agency Multimedia House Ltd.; company name changed to Group Nexus/H Ltd.
December
- Hakuhodo Cheil Inc. established in Korea as a joint venture with Cheil Communications Inc.
2000
January
- Hakuhodo Percept Pvt. Ltd. established in India
March
- G1 Worldwide, Inc. established as a joint venture with TBWA Worldwide Inc.
Hakuhodo G1, Inc. established
2001
March
- PT Hakuhodo Indonesia established
September
- Business alliance formed with UK-based creative and brand consultancy Wolff Olins
November
- Renowned authority on shopping behavior Paco Underhill signed on as advisor
2002
January
- MJW Hakuhodo Pty. Ltd. established in Australia
Hakuhodo & Saigon Advertising Co., Ltd. established in Vietnam as a joint venture with Saigon Advertising
March
- Capital investment in Korean advertising agency comON21 Co., Ltd.
May
- Powerbranding corporate philosophy announced
July
- Taiwanese advertising agencies Hakuho Communications, Inc. and HY Communications, Inc. consolidated as Hakuho Communications, Inc.; HY Marketing, Inc. renamed Taiwan Hakuhodo Media Inc.
August
- Capital investment in French advertising agency Agence 154 S.A.
October
- Capital investment in Indian advertising agency Percept/H Pvt. Ltd.
December
- Capital investment in UK advertising agency Mustoe Merriman Levy Ltd.

2003
January
- Capital investment in German advertising agency Damm & Bierbaum Agentur Für Marketing und Kommunikation GmbH
February
- Capital investment in Malaysian advertising agency People 'n Rich-H Sdn. Bhd.
May
- Capital investment in US advertising agency Mendesohn|Zien Advertising LLC
June
- Media Intelligence Co., Ltd. Hakuhodo awarded special 50th anniversary lion at Cannes Lions International Advertising Festival
October
- Hakuhodo DY Holdings Inc., a joint holding company, established with Daiko Advertising Inc. and Yomiko Advertising Inc. Hakuhodo becomes fully owned subsidiary of Hakuhodo DY Holdings through a share transfer arrangement
December
- Hakuhodo DY Media Partners Inc. established
2004
January
- Guangdong GDAD-Hakuhodo Advertising Co., Ltd. established in China
August
- World renowned touchpoint authorities Prof. Don E. Schultz and Adjunct Prof. Lisa Fortini-Campbell signed on as advisors
Hakuhodo Inc. Beijing Representative Office established
November
- Capital investment in Emirati agency Inpress Advertising FZ-LLC
2005
April
- Hakuhodo Univ., an internal learning facility, established
May
- Hakuhodo becomes first communications company in Japan to join the United Nations Global Compact
July
- Hakuhodo acquires Japanese rights to subconscious research program ZMET
September
- Business alliance established with Russian agency Prior Advertising
October
- Joint advertising creative project initiated with Tongji University of Shanghai, China Renowned authority on sensory branding Martin Lindstrom, signed on as advisor
2006
August
- TBWA/Hakuhodo Inc. established
TBWA/Hakuhodo China established
2008
February
- Hakuhodo Asia Pacific Co., Ltd. established in Thailand
April
- Hakuhodo Rus LLC established in Russia