Statutes
Statutes enforced by the US DOJ Antitrust Division
Statutes enforced by the FTC Competition Bureau
Parens Patriae Statute (state attorneys general parens patriae power)
States
Alabama: Restraint of Trade or Production
Title 8 (Commercial Law and Consumer Protection), Chapter 10 (Restraint of Trade or Production)
Alaska: Restraint of Trade Act
Title 45 (Trade & Commerce), Chapter 50 (Competitive Practices, Regulation of Competition, Consumer Protection), Title 4 (Monopolies & Restraint of Trade)
Arizona: Uniform State Antitrust Act
Chapter 10, Article 1 (Uniform State Antitrust Act)
Arkansas: Unfair Practices Act
Title 4 (Business and Commercial Law), Subtitle 6 (Business Practices), Chapter 75 (Unfair Practices), see particularly subchapters 2 to 5
California: Unfair Competition Law
Business and Professions Code, Division 7 (General Business Regulations), Part 2 (Preservation and Regulation of Competition), all chapters (Chapters 1-7), Sections 16600 to 17365
Colorado Antitrust Act of 1992
Title 6 (Consumer and Commercial Affairs), Fair Trade and Restraint of Trade, Article 4 , Sections 6-4-101 to 6-4-122
Connecticut: Antitrust Act
Title 35, Chapter 624, Sections 35-24 to 35-46
Delaware: Antitrust Act
Title 6 (Commerce and Trade), Subtitle II (Other laws relating to commerce and trade), Chapter 21 (Antitrust), § 2101 - 2114.
District of Columbia: Restraints of Trade
§ 28-4501 to § 28-4518 in the state code
Florida Antitrust Act of 1980
Title 33 (Regulation of Trade, Commerce, Investments and Solicitations), Chapter 542 (Combinations Restricting Trade or Commerce)
Georgia
Title 13 (Contracts), Chapter 8 (Illegal and Void Contracts Generally), Article 1 (General Provisions), §§ 13-8-2 (contracts against public policy) to 13-8-2.1 (contracts in partial restraint of trade)
Georgia Constitution: Prohibition on Legislature authorizing a contract in restraint of trade
Constitution of the State of Georgia, Article III, Section VI, Paragraph V
Hawaii Antitrust Provisions & Exemptions
Title 26 (Trade Regulation and Practice), Chapter 480 (Monopolies; Restraint of Trade), Chapters I (Antitrust Provisions) and II (Antitrust Exemptions). Enacted in 1961.
Idaho Competition Act | Anti-Price Discrimination Act
Title 48 (Monopolies and Trade Practices), Chapter 1 (Idaho Competition Act) & Chapter 2 (Anti-Price Discrimination Act). Chapter 3 (predatory pricing) repealed
Illinois Antitrust Act
Under Chapter 740 (Civil Liabilities). Enacted 1965.
Indiana
Title 24 (Trade Regulations; Consumer Sales and Credit), Article 1 (Combinations in Restraint of Trade), all chapters (1-5). Enacted in 1897.
Iowa Competition Law
Title XIII (Commerce), Subtitle 5 (Regulation of Commercial Enterprises), Chapter 553 (Iowa Competition Law)
Kansas Antitrust Act of 1897
Chapter 50 (Unfair Trade and Consumer Protection), Article 1 (Restraint of Trade)
Kentucky Consumer Protection Act
Title XXIX (Commerce and Trade), Chapter 367, Consumer Protection Act, §§ 367.110 to 367.360. See particularly Section 367.175 (Other unlawful acts), sub-sections 1 & 2 (analogues to the Sherman Act)
Maine: Monopolies & Profiteering Law
Title 10, Chapter 201
Maryland: Antitrust Act
Commercial Law, Title 11 (Trade Regulation), Subtitle 2 (Antitrust). § 11-201 to 11-213. Enacted in 1957.
Massachusetts: Antitrust Act
Sections 1-14A of Chapter 93 (Regulation of Trade and Certain Enterprises)
Michigan Antitrust Reform Act
Sections 445.771-445.788, or, Act 274 of 1984
Minnesota Antitrust Law of 1971
Trade Regulations, Consumer Protection: Chapter 325D (Restraint of Trade), Sections 325D.01-325D.08 (Unfair Discrimination and Competition), and Sections 325D.49-325D.66 (Combinations in Restraint of Trade), and 68-71 (Monopolization of Food Products)
Mississippi
Title 75 (Regulation of Trade, Commerce and Investments), Chapter 21 (Trusts and Combines in Restraint or Hindrance of Trade)
Missouri Antitrust Law
Title 26 (Trade and Commerce), Chapter 416 (Monopolies, Discriminations and Conspiracies). § 416.011 to 416.161. Enacted 1974.
Montana Unfair Trade Practices and Consumer Protection Act of 1973
Title 30 (Trade and Commerce), Chapter 14 (Unfair Trade Practices & Consumer Protection), Part 2 (Unfair Trade Practices Generally), particularly Section 30-14-205, of the state Code
Nebraska
Chapter 59 (Monopolies and Unlawful Combinations), particularly Article 8 (Unlawful Restraints of Trade). Original antitrust statute enacted in 1905.
Nevada Unfair Trade Practice Act
Title 52 (Trade Regulations and Practices), Chapter 598A. (Unfair Trade Practices). See particularly Section 598A.060 (listing types of antitrust violations). Enacted 1975.
New Hampshire
Title 31 (Trade and Commerce), Chapter 356 (Combinations and Monopolies). Enacted in 1973.
New Jersey Antitrust Act
Title 56 (Trade Names, Trade-Marks and Unfair Trade Practices), Chapter 9, §§ 56:9-1 to 56:9-19
New Mexico Antitrust Act of 1978
Chapter 57 (Trade Practices and Regulations), Article 1 (Restraints of Trade), § 57-1-1.1 et seq.
New York: Donnelly Antitrust Act, & Fair Trade Act
General Business Law, Article 22 (Monopolies), §§ 340 through 347 | Fair Trade Act: Article 24A, §369a (price-fixing prohibited). The Donnelly Act was enacted in 1899.
North Carolina
Chapter 75 (Monopolies, Trusts & Consumer Protection), Article 1 (General Provisions), §§ 75-1 through 75-42
Ohio Valentine Antitrust Law
Title 13 (Commercial Transactions - Ohio Uniform Commercial Code), Chapter 1331 (Monopolies) § 1331.01 to 1331.99
Oklahoma Antitrust Reform Act
Title 79 (Trusts & Pools), Chapter 4 (Oklahoma Antitrust Reform Act) | Title 15 (Contracts), Chapter 4 (Unlawful Contracts), § 217-219 (Restraint of trade)
Oregon Anti-price Discrimination Law | Antitrust Law
Title 50 (Trade Regulation and Practices), Chapter 646 (Trade Practices and Antitrust Regulation): Anti-Price Discrimination Law: Sections 646.010 to 646.180. Antitrust Law: Sections 646.705 - 646.836.
Pennsylvania Unfair Trade Practices and Consumer Protection Law of 1996
Title 73 (Trade and Commerce), Chapter 4 (Fair Trade and Business Practices), Sections 201.1 to § 201-9.3. See particularly § 201-2 (Definitions), the most substantive section. See also Title 73, Chapter 5 (Unfair Sales), Section 213 (predatory pricing).
Puerto Rico
10 L.P.R.A. § 257 to 10 L.P.R.A. § 276
Rhode Island Antitrust Act
Title 6 (Commercial Law--General Regulatory Provisions), Chapter 36 (Antitrust Law), §§ 6-36-1 through 6-36-26. Enacted in 1979.
South Carolina
§§ 39-3-10 to 39-3-360
South Dakota
§§ 37-1-3.1 to 37-1-33
Tennessee
Tenn. Code §§ 47-25-101 to 47-25-112. First enacted 1891.
Texas Texas Free Enterprise and Antitrust Act of 1983
Tex. Bus. & Com. Code §§ 15.01 to 15.52
Utah: Directory of State Antitrust Laws
Vermont Consumer Fraud Act
Title 9 (Commerce & Trade), Chapter 63 (Consumer Fraud), Subchapter 1 (General Provisions), §§ 2453 (Practices prohibited; antitrust and consumer fraud) and 2461c (Consumer fraud; Predatory pricing), and others.
Virgin Islands
11 V.I.C. § 1501 to 11 V.I.C. § 1518
Virginia Antitrust Act
§§ 59.1-9.1 to 59.1-9.18
Washington Consumer Protection Act
§§ 19.86.010 to 19.86.920
West Virginia
§§ 47-18-1 to 47-18-23
Wisconsin
§§ 133.01 to 133.18. The state's statutes online are annotated (with cases). Chapter 133 was enacted in 1979.
Wyoming
§§ 40-4-101 to 40-4-123
FindLaw: State Antitrust Laws