In 1957 the Port of Koper was founded. The floating dredger "Peter Klepec" started dredging the sea bottom on the north coast of the city. The first ship was moored a year and a half later, when the first berth was completed. The moored ship was Gorica, the transoceanic ship owned by the Slovene ship-owner Splošna Plovba from Piran.

Luka Koper got its present name in 1961. Two years later the customs zone was set up. In 1967 the company, as an investor, completed the construction of the 31-kilometre railway track from Koper to Prešnica, which enabled Luka Koper to be included in the European railway system.
The Terminal for Petroleum Products started operating in 1968 and the Chemical Terminal in 1972, when Timber Terminal capacities were also expanded. In 1973 traffic flow reached almost two million tons. The first containers appeared at that time. The development started towards inter-modal and combined transport. In 1974 the first container line was established for the Mediterranean. The Container Terminal shore constructed according to new technology on steel pilots was concluded in 1976, and the Terminal itself finalised in 1979.
In 1984 the Terminal for Coal and Iron Ore was handed over for use, followed by the construction of the Grain silo with the pertaining quay. In 1988 a new cotton warehouse and a Terminal for Borates and Phosphorus acid were constructed. A year later the Oil and Alumina Terminals were established. Towards the end of the 1980s the cargo throughput rose to 5 million tons.

The economic and political changes Slovenia experienced in the first half of the 1990s brought new things to us as well. The lost business represented by customers from Yugoslav republics was gradually replaced by customers from Central European markets.
In 1996 the company completed the transformation process, whereby Luka Koper became a public limited company and the company's shares - LKPG were listed on the Ljubljana Stock Exchange. In that same year the Car Terminal started being used.
In 1997 the company was awarded the ISO 9002 certificate for its quality services, followed by the ISO 9001. In that year construction of the Livestock Terminal started.
By investing in separate collection of waste and its processing, setting up sea monitoring and establishing co-operation with international organisations, Luka Koper systemically approached environmental management and adaptation to the standards of the European Union. In 2000 the company received the ISO 14001 environmental certificate. Last year Luka Koper also obtained a 30-year concession for managing the container terminal in Trieste Port through the daughter company TICT spa. We withdrew from the company in 2004.

During 2001 and 2002 investment funds were earmarked for the construction of a new shore, arrangement of moorings and warehousing premises at Pier II. On the initiative of the Ministry of Economy of the Republic of Slovenia, Luka Koper assumed the role of the leading company in the pilot project of Slovene transport logistic cluster, whose basic objective is the promotion of the Slovene transport route.

In 2004 the company reorganised theTerminal for Coal and Iron Ore and renamed it the European Energy Terminal.  The Dry Bulk Cargo Terminal was awarded the Non GMO Certificate according to the requirements of the BRC Standard for the Preservation of the Identity of Non-Genetically Modified Food Ingredients and Products. In that year the company also received recognition for achievements in 2003 in the development of the concept of a learning company, which was presented by the Chamber of Commerce of Slovenia and the Institute for the Development of the Learning Organization. The maritime throughput  exceeded 12 million tons. The port received the status of a EU port and border inspection post for goodsentering and leaving the EU customs zone.

Year 2005 was characterized by a greater cooperation with the local community and reconciliation of open issues with the state.

In year 2006 the Management Board adopted a new business strategy of the public limited company Luka Koper for the period up to 2015. The throughput exceeded 14 million tons of handled cargo.

In 2007 we established the company Adria Terminali, Ltd, for the purpose of operating the inland terminal in Sežana. With this act Luka Koper acquired an area of 110.000 sq meters. This was an important step towards the development of the transport logistic centers network, which will in the future present the backbone of Luka Koper, d.d.. The first part of a new operational and marketing IT system (TinO) was started in the same year. We rewarded the best ideas in a public competition for a complete port area arrangement. A regional representative office of Luka Koper for Far East was opened in Malaysia.  The foundation stones for the extension of the first pier for the Container terminal requirements and for the new car warehouse were placed.  We acquired the ISO 22000:2005 food safety system certificate. The annual maritime throughput surpassed 15 million tonnes for the first time.

In 2008 Luka Koper and the Republic of Slovenia signed the concession agreement, which settled issues related to port activities, management, development and ordinary maintenance of port infrastructure. The same year was also denoted for an extensive investment cycle in the port infrastructure. The main development projects that were fully completed in that year are the extension of the operative shore of peer number 1 and the end of the phase 1 of building the new warehouse for 2.750 cars. In the same year we also started to build the logistic centre and the container terminal in Arad, Romania.

The daughter company Adria Transport, LTD, purchased three locomotives and consecutively started to operate as the first private railroad operator in Slovenia. Its activities are currently oriented towards Slovenian, Austrian and German market.
In 2008 we increased the yearly cargo throughput to 16 million tons. A structural overview reveals an increase in the field of liquid cargo, containers, fruit and vegetables.
The development consensus between employees and the management was formalized with the sign of the new collective agreement, which invigorates a long-run balance between economic, social and environment viewpoints of development orientations. 

In 2009 we completed major investments in the infrastructure that is able to service modern container ships and other types of cargoes. Thanks to extended container quay, enlarged warehousing area and four new postpanamax cranes and other equipment, the container terminal is able to service ships with capacity up to 8,000 TEU. We completed the construction of warehouse for cars with 4,100 parking lots and started the construction of terminal for alcohol which entered into service in 2010, commenced. That same year, record throughput at Luka Koper’s Container Terminal surpassed 400,000 TEUs, making it the largest in the Northern Adriatic; a new container service now provided a direct link between Koper and the Far East. 
In addition to joining the EU’s Eco-Management and Audit Scheme (EMAS),Luka Koper began providing public information re sustainable development via its www.zivetispristaniscem.si (Living With the Port) website. This portal provides real-time data in relation to the average hourly noise level monitored at two peripheral points within the port zone. 
The European Commission issued a decision as to its co-funding the second stage of the renewal and modernisation of the Koper – Divača railway line, which allowed Luka Koper to increase rail cargo services to its European hinterland. 
Also in 2010, Luka Koper became Austria's number one seaport in relation to its overseas trade. 

In 2011, Luka Koper surpassed a record 17 million tonnes of cargo throughput. Car Terminal operations growth was for the most part attributable to the Chinese market. More than 100,000 cruise guests passed through Koper’s Passenger Terminal in its first six years of operation, while for the first time in the port's history, cargo throughput at the Container Terminal exceeded 500,000 TEUs. 
The Government of the Republic of Slovenia endorsed the National Spatial Plan (NSP) for the comprehensive spatial arrangement of the Port in Koper. It is a document that will enable the long-term development of the port as well as enhance its competitive advantages. 

In 2012, the Luka Koper INPO d.o.o. subsidiary commenced dredging works on the access channels to Basin I - an important step towards enhancing the competitiveness of the Port of Koper. 
The 318-metre long and 43-metre wide Maersk Karlskrona - with a 7,908-TEU capacity - and the Celebrity Silhouette, respectively became the largest container vessel and the largest cruise liner ever to call at the Port of Koper. 
Luka Koper commenced publication of data on sea quality via its Living With the Port sustainable development portal. 

In 2013, Luka Koper managed to acquire all necessary consents and permits for the creation of sites to deposit dredged silts; this allowed commencement of seabed dredging work in Basin I - to a depth of 13 metres at the Container Terminal quayside. 
The Slovenian Maritime Administration issued a permit to increase permitted maximum draughts of vessels using the Terminal from 11.4 to 12.5 metres. As a consequence, container ships calling at the port were able to carry an additional 3,600 TEUs. In tandem with these dredging operations, work also started on the construction of new container storage facilities at the head of Pier I. 
Total cargo at the Port of Koper amounted to 22 million tonnes in 2016, whilst the Container Terminal broke its existing record with a throughput of more than 800,000 TEUs.