This all are By area of study and practice:
Administrative law
Admiralty law (or maritime law)
Advertising law
Agency law
Alcohol law
Alternative dispute resolution
Animal law
Antitrust law (or competition law)
Appellate practice
Art law (or art and culture law)
Aviation law
Banking law
Bankruptcy law (creditor debtor rights law or insolvency and reorganization law)
Biotechnology law
Bird law
Business law (or commercial law); also commercial litigation
Business organizations law (or companies law)
Class action litigation/Mass tort litigation
Communications law
Computer law
Conflict of law (or private international law)
Constitutional law
Construction law
Consumer law
Contract law
Copyright law
Corporate law (or company law), also corporate compliance law and corporate governance law
Criminal law
Cryptography law
Cultural property law
Custom (law)
Cyber law
Defamation
Derivatives and futures law
Drug control law
Elder law
Employee benefits law (ERISA)
Employment law
Energy law
Entertainment law
Environmental law
Equipment finance law
Evidence
Family law
FDA law
Financial services regulation law
Firearm law
Food law
Franchise law
Gaming law
Health law
Health and safety law
Health care law
Immigration law
Insurance law
Intellectual property law
International law
International trade and finance law
Internet law
Labor law (or Labour law)
Land use & zoning law
Litigation
Martial law
Media law
Mergers & acquisitions law
Military law
Mining law
Juvenile law
Music law
Mutual funds law
Nationality law
Native American law
Obscenity law
Oil & gas law
Parliamentary law
Patent law
Poverty law
Privacy law
Private equity law
Private funds law / Hedge funds law
Procedural law
Product liability litigation
Property law
Public health law
Railroad law
Real estate law
Securities law / Capital markets law
Social Security disability law
Space law
Sports law
Statutory law
Tax law
Technology law
Timber law
Tort law
Trademark law
Transport law / Transportation law
Trusts & estates law
Utilities Regulation
Venture capital law
Water law
If you need more information so please let me know.....