Cloning technology is one of the biggest new developments in medical era. Scholars and theoricians of different scientific, ethical, religious, social and legal fields including criminal, civil and international areas have taken different approaches. This paved the way for a large field to appear where different opinions and thoughts coincide. The outcome of these challenges in criminal law has resulted in enacting some laws and criminalizing cloning international aspects and in its turn in national arena in some countries. The scope of criminalization’s and prohibition of all kinds of cloning to mere prohibition of human cloning are variant. This variant criminal policy taken by government are arisen from differences in religious believes and variant ethical thoughts which govern them. Although being included in one of ten countries which have this technology, Islamic Republic of Iran has not yet taken a clear and distinct criminal policy in this respect. Conducting a brief study of the world community and criminal policy of some developed countries, this writing has also induced the governing and general viewpoints of Islamic jurists and dealt with ethical consequences of prescribing this technology and pointed out the necessity of its criminalization.