Barclays Investment Bank (trading as Barclays, formerly Barclays Capital) is a British multinational investment bank headquartered in London, United Kingdom and a division of Barclays PLC. It provides financing and risk management services to large companies, institutions and government clients. It is a primary dealer in U.S. Treasury securities and various European Government bonds.

Barclays Investment Bank has offices in over 29 countries and since the acquisition of Lehman Brothers main U.S. division in September 2008, employs over 20,000 people, over 7,000 people work in the IT division. This has significantly increased Barclays Capital's presence in North America.

In mid-March 2012, the trading name of Barclays Capital was changed to simply 'Barclays', and the name of the division was changed to 'Barclays Investment Bank

".....One of the best in IT sector ... nothing can pay u as much as Investment bank pays"