Notary is a position of trust given by law to a notary who has been legally entrusted with making an authentic deed. The PPAT has the main task of carrying out some of the land registration activities by making deeds as proof that certain legal actions have been taken regarding land rights or ownership rights over flat units. Not infrequently the PPAT as a Public Official deals with criminal law processes such as being questioned as a witness or suspect in relation to the contents of the deed drawn up by him.One of the cases of forgery of authentic deed is the criminal case of forgery of authentic deed committed by PPAT namely in principle the defendant SA as PPAT has been charged with forging a letter in the form of deed of grant Number 15/2013 dated 12 December 2013 in the form of deed of grant for a plot of land from the grantor Mrs. . Tuminem and Mr. Sutikno to the beneficiary Mr. Riyanto. Based on this, there are interesting formulations of the problem. First, the legal consequences of fake authentic deeds on the quality of the strength of evidence for authentic deeds in Indonesia. The conclusion of the first problem is that the responsibilities of Notaries and PPATs in carrying out their profession require Notaries to always be careful and careful in every action they take. Second, apart from being subject to sanctions according to laws and regulations, PPATs will also be subject to sanctions in the PPAT Code of Ethics based on Article 4 letter (r) of the PPAT Code of Ethics where a PPAT has committed an act that violates the PPATs Code of Ethics.