Georgia has three laws that apply.
One is Carrying Concealed Weapons, which is unfortunately extremely broad and covers knives designed for offense or defensive purposes. Further, there is no real case law that is helpful to define what the statute means by offense and defense. LEOs opinions will vary and you may get a challenge on anything other than a small slip-joint knife. Here is the statute:
16-11-126.
(a) A person commits the offense of carrying a concealed weapon when such person knowingly has or carries about his or her person, unless in an open manner and fully exposed to view, any bludgeon, metal knuckles, firearm, knife designed for the purpose of offense and defense, or any other dangerous or deadly weapon or instrument of like character outside of his or her home or place of business, except as permitted under this Code section.
Another statute prohibits various types of weapons, including knives designed for offense or defense and any knife with a blade more than 2 inches, in public. Here is the statute will the definitions below.
16-11-127.
(a) Except as provided in Code Section 16-11-127.1, a person is guilty of a misdemeanor when he or she carries to or while at a public gathering any explosive compound, firearm, or knife designed for the purpose of offense and defense.
(b) For the purpose of this Code section, 'public gathering' shall include, but shall not be limited to, athletic or sporting events, churches or church functions, political rallies or functions, publicly owned or operated buildings, or establishments at which alcoholic beverages are sold for consumption on the premises. Nothing in this Code section shall otherwise prohibit the carrying of a firearm in any other public place by a person licensed or permitted to carry such firearm by this part.
A third statute prohibits carrying weapons (defined in the statute) in a school safety zone. Here it is:
16-11-127.1.
Weapons on school safety zones, school buildings or grounds or at school functions
(a) As used in this Code section, the term:
(1) “School safety zone” means in, on, or within 1,000 feet of any real property owned by or leased to any public or private elementary school, secondary school, or school board and used for elementary or secondary education and in, on, or within 1,000 feet of the campus of any public or private technical school, vocational school, college, university, or institution of postsecondary education.
(2) “Weapon” means and includes any pistol, revolver, or any weapon designed or intended to propel a missile of any kind, or any dirk, bowie knife, switchblade knife, ballistic knife, any other knife having a blade of two or more inches, straight-edge razor, razor blade, spring stick, knuckles, whether made from metal, thermoplastic, wood, or other similar material, blackjack, any bat, club, or other bludgeon-type weapon, or any flailing instrument consisting of two or more rigid parts connected in such a manner as to allow them to swing freely, which may be known as a nun chahka, nun chuck, nunchaku, shuriken, or fighting chain, or any disc, of whatever configuration, having at least two points or pointed blades which is designed to be thrown or propelled and which may be known as a throwing star or oriental dart, or any weapon of like kind, and any stun gun or taser as defined in subsection (a) of Code Section 16-11-106. This paragraph excludes any of these instruments used for classroom work authorized by the teacher.
(b) Except as otherwise provided in subsection (c) of this Code section, it shall be unlawful for any person to carry to or to possess or have under such person's control while within a school safety zone or at a school building, school function, or school property or on a bus or other transportation furnished by the school any weapon or explosive compound, other than fireworks the possession of which is regulated by Chapter 10 of Title 25. Any person who violates this subsection shall be guilty of a felony and, upon conviction thereof, be punished by a fine of not more than $ 10,000.00, by imprisonment for not less than two nor more than ten years, or both; provided, however, that upon conviction of a violation of this subsection involving a firearm as defined in paragraph (2) of subsection (a) of Code Section 16-11-131, or a dangerous weapon or machine gun as defined in Code Section 16-11-121, such person shall be punished by a fine of not more than $ 10,000.00 or by imprisonment for a period of not less than five nor more than ten years, or both. A child who violates this subsection shall be subject to the provisions of Code Section 15-11-63.