There are three protocols that are referred to jointly as the Palermo Protocols, or are sometimes incorrectly referred to individually as the Palermo Protocol.

The Palermo Protocols are three protocols adopted by the United Nations

United Nations

The United Nations is an international organization whose stated aims are facilitating cooperation in international law, international security, economic development, social progress, human rights, and achievement of world peace...

 in 2000 in Palermo

Palermo

Palermo is a city in Southern Italy, the capital of both the autonomous region of Sicily and the Province of Palermo. The city is noted for its history, culture, architecture and gastronomy, playing an important role throughout much of its existence; it is over 2,700 years old...

, Italy

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

, together with the Convention against Transnational Organized Crime

Convention against Transnational Organized Crime

The Convention against Transnational Organized Crime is a United Nations-sponsored multilateral treaty against transnational organized crime, adopted in 2000...

. They are:

• the Protocol to Prevent, Suppress and Punish Trafficking in Persons, especially Women and Children
  Protocol to Prevent, Suppress and Punish Trafficking in Persons, especially Women and Children
  The Protocol to Prevent, Suppress and Punish Trafficking in Persons, especially Women and Children is a protocol to the Convention against Transnational Organised Crime...
  
  ; and
• the Protocol against the Smuggling of Migrants by Land, Sea and Air.
• the Protocol against the Illicit Manufacturing and Trafficking in Firearms, Their Parts and Components and Ammunition, supplementing the United Nations Convention against Transnational Organized Crime

http://www.unodc.org/unodc/en/treaties/CTOC/index.html
These protocols and convention fall within the jurisdiction of the United Nations Office on Drugs and Crime

United Nations Office on Drugs and Crime

The United Nations Office on Drugs and Crime is a United Nations agency that was established in 1997 as the Office for Drug Control and Crime Prevention by combining the United Nations International Drug Control Program and the Crime Prevention and Criminal Justice Division in the United Nations...

.