Buying in may refer to:
*
Buying in (poker), a tournament entrance fee
*
Buying in (securities), a process in which a buyer whose seller fails to deliver the securities contracted for, can "buy in" the securities from a third party
*
Management buy-in A management buy-in (MBI) occurs when a manager or a management team from ''outside'' the company raises the necessary finance, buys it, and becomes the company's new management. A management buy-in team often competes with other purchasers in the s ...
, when an outside management becomes a company's new management by buying it
{{Disambiguation