Rijkman Willem Johan Groenink (born 25 August 1949 in Den Helder) is a Dutch banker. He is best known as the CEO of the Dutch bank ABN AMRO at the time that the bank was sold to a consortium of banks. The consortium was led by the Royal Bank of Scotland, Fortis and Banco Santander in 2007.
Groenink worked for the bank for 30 years. He studied law at the Utrecht University and has also a Diploma in Business Administration (DipBA) from the Manchester Business School.
In 1974 he joined the bank's predecessor AMRO Bank (Amsterdam-Rotterdam Bank) and he made a quick career within the bank. In 1988 he became a member of the board of directors of the AMRO bank and when the Amro merged with the Algemene Bank Nederland (ABN) in 1990 Groenink became a member of the board of the new group ABN AMRO. In the group's board Groenink was responsible for the division the Netherlands. In May 2001 Groenink was appointed as chair of the board as successor of Jan Kalff.
Late in 2005 the bank got involved in a number of controversies in the United States: in a period of 1 month the bank was involved in a scandal where LaSalle Bank, part of the ABN Amro group, had used funds of their customer to invest in one of their own investment vehicles without the customers knowing this. In the same month the bank had accepted a settlement of $80 million from the US regulator because they had done business with Libya and they got a fine of $40 million for irregularities with mortgage guarantees using government funds.