Plagiarism is an unfavorable act of claiming credit or ownership of someone else’s ideas or unfair capture of other’s work and claiming it as your own. Such actions and attitudes are very common since the existence of human life on our planet Earth. Academic morals that guarantees integrity which is indispensable to avoid any scientific or academic misconduct. While presenting and publishing any document, it is imperative to ensure its uniqueness and credibility. Attempts of manipulation, fabrication or falsification of the data, experiment, process, equipment, procedures, observations, findings, or results lead to issues of misconduct and are extremely unethical. Plagiarism is another most common type of wrong doing and in some jurisdictions, it may also be illegal. While most of the people in general have just nominal degree of awareness about plagiarism, not everyone is precisely educated or familiarized about it. This chapter discusses plagiarism at length and enables the readers to gain insight to what is plagiarism and related offences, reasons for plagiarism, types of plagiarism, different domains in plagiarism with real-time case studies, ways, and techniques of avoiding plagiarism and the repercussions of plagiarizing.