Starting from the Kantian categorical imperative, „act only according to that maxim whereby you can at the same time will that it should become a universal law”, good faith represents a fundamental concept in law and is recognized in all areas of the legal world. It can be argued that good faith is an essential pillar in the legal system, promoting ethical conduct and strengthening trust in legal relationships. Aspects related to good faith are encountered in contract law, influencing their interpretation and execution, as well as in family law, where the principle of good faith can play a significant role in various situations, such as exercising parental authority or dividing common property. Parties are encouraged to act in the best interest of children and cooperate in resolving disputes. Good faith is also relevant in the area of exercising procedural obligations in civil or criminal procedural law. The mentioned aspects are just a few fragments of the research horizons generated by the proposed conference theme. Multiple topics from these thematic areas, as well as from areas such as labor law, transportation law, constitutional law, or international public law, will be analyzed in the selected scientific papers – current topics in research likely to attract the interest of both legal theorists and practitioners (lawyers, notaries, judges, judicial executors, legal counselors).