Object Pascal is an object-oriented derivative of Pascal mostly known as the primary programming language of Borland Delphi. It is also known as the "Delphi programming language" when describing the dialect used by Borland Delphi.
Borland used the name "Object Pascal" for the programming language in the first versions of Borland Delphi, but later renamed it to the "Delphi programming language". The Free Pascal compiler supports different modes/dialects and besides Turbo Pascal, Delphi and MacPascal, Object Pascal can be selected.