Which Was the First Object Oriented Programming Language?


Angela Bailey

Object-oriented programming (OOP) is a programming paradigm that focuses on using objects to design and build computer programs. It revolutionized the way software is written, bringing in concepts like encapsulation, inheritance, and polymorphism.

But which programming language can claim to be the first to introduce these revolutionary ideas? Let’s dive into the history of OOP and find out.

The Birth of Object-Oriented Programming

OOP as a concept emerged in the 1960s and 1970s, with several programming languages contributing to its development. However, one language stands out as the pioneer in implementing key OOP principles – Simula.

The Birth of Simula

Simula was developed by Ole-Johan Dahl and Kristen Nygaard at the Norwegian Computing Center in Oslo. Their work on Simula began in 1961, with the goal of creating a language that could model real-world systems. Simula introduced classes, objects, and inheritance – foundational elements of object-oriented programming.

Classes: A class is a blueprint for creating objects. It defines properties (attributes) and behaviors (methods) that objects of that class will have.

Objects: Objects are instances of classes. They encapsulate data and behavior defined by their respective classes.

Inheritance: Inheritance allows classes to inherit properties and methods from other classes, enabling code reuse and hierarchical relationships between classes.

Influence on Future Languages

The impact of Simula on subsequent programming languages cannot be overstated. One notable language heavily influenced by Simula was Smalltalk – developed at Xerox Palo Alto Research Center (PARC) in the 1970s by Alan Kay, Dan Ingalls, Adele Goldberg, and others. Smalltalk took the ideas of classes, objects, and inheritance from Simula and expanded on them.

Smalltalk influenced a whole generation of programming languages like C++, Objective-C, and Java. These languages further refined the concepts introduced by Simula, making OOP accessible to a larger audience.


In conclusion, while Simula was not the first programming language overall, it can be credited as the first to introduce key object-oriented programming principles such as classes, objects, and inheritance. Its influence on subsequent languages cannot be ignored. Simula paved the way for the development of modern OOP languages that are widely used today.

In your journey as a programmer, understanding the history of object-oriented programming and its origins will deepen your appreciation for this powerful paradigm. Remember that learning any programming language is a stepping stone towards mastering the art of software development!

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