The purpose of this study is to investigate unethical advertising from the standpoint of businesses and their customers. The thesis seeks to identify customer perceptions about unethical advertising. The paper investigates the concepts of business ethics, marketing ethics, and unethical advertising. Advertising is the most important aspect of marketing. Advertisements are distributed to the general public via television, radio, magazines, newspapers, and the internet. Today's technology allows for new and successful marketing methods. For corporations, ethics is still a major concern. Businesses do not adhere to marketing ethics requirements. Advertisers generate immoral content in order to enhance product and service sales. The quantitative method was used to collect data for this investigation. The study's sample method is non-probability sampling. Quota sampling is used to investigate disparities in age groups. A web-based questionnaire is used to perform the research. The study's findings are assessed descriptively. Customers are aware of unethical advertising, according to the findings. People are either upset by unethical advertising or ignore unethical cases. Some people are inclined to boycott corporations that advertise in an immoral manner, while others are simply frustrated by the companies' activities.