For entrepreneur, business environment represents all elements inside of enterprise which have direct or indirect influence on its development and behavior. Entrepreneur in today' s world must constantly study and follow business environment where he is located, in order to notice all opportunities and threats which the environment provides to the company. The first part of thesis sets out definition of business environment and its fundamentals which represent one of key factors for a quality spotting of business opportunity. In thesis it is stated what is a difference between business environment of Republic of Croatia and other countries, and what key factors need to be taken into consideration with doing business in international context. Second part of thesis puts emphasis on spotting business opportunity and talk about that every business idea is not always a business opportunity. Noticing business opportunity is a complex process because every entrepreneur strives to make its business idea to business opportunity, in which various methods and skills help him. The aim oft his thesis it to discover what is an impact of business environment on spotting business opportunity and do the same opportunities and threats have an affect on spotting business opportunities in all countries. In summary, it is concluded how business environment is important for spotting business opportunities in the all countries.