Operation Tiger (Croatian: Operacija Tigar) was a Croatian Army (HV) offensive conducted in areas of Croatia and Bosnia and Herzegovina near Dubrovnik between 1 and 13 July 1992. It was designed to push the Army of Republika Srpska (VRS) away from the city towards Popovo field and secure a supply route via Rijeka Dubrovačka, which was gained in early June as the siege of Dubrovnik by the Yugoslav People's Army (JNA) was lifted. The operation's success was facilitated by the establishment of the HV's Southern Front command and the successful conclusion of the May–June 1992 operations against the VRS in the Neretva River valley, which concluded with Operation Jackal.

Although Operation Tiger captured only 40 square kilometres (15 square miles) of territory, it secured the Ploče–Dubrovnik road and placed the HV in a position to capture the rest of southern Dalmatia over the following three-and-a-half months. That was achieved through a negotiated JNA withdrawal from Konavle followed by an HV amphibious operation in the area of Cavtat— capturing Konavle before the VRS could move in and reach the Adriatic Sea coast. Two additional HV offensives aimed at securing the Dubrovnik area defenses —Operation Liberated Land and an assault on the Vlaštica Peak— stabilized the HV's hold on the area and threatened VRS-held Trebinje in eastern Herzegovina. As a result of the JNA pullback, the Prevlaka peninsula was demilitarized and placed under United Nations control until 1996.

In August 1990, a revolution took place in Croatia; it was centred on the predominantly Serb-populated areas of the Dalmatian hinterland around the city of Knin, and in parts of the Lika, Kordun, and Banovina regions, and settlements in eastern Croatia with significant Serb populations. The areas were subsequently named the Republic of Serbian Krajina (RSK). After declaring its intention to integrate with Serbia, the Government of Croatia declared the RSK a rebellion. By March 1991, the conflict escalated into the Croatian War of Independence. In June 1991, Croatia declared its independence as Yugoslavia disintegrated. A three-month moratorium followed, after which the decision came into effect on 8 October. The RSK then initiated a campaign of ethnic cleansing against Croatian civilians, and most non-Serbs were expelled by early 1993. By November 1993, fewer than 400 ethnic Croats remained in the UN-protected area known as Sector South, and a further 1,500 – 2,000 remained in Sector North.

The Croatian National Guard (ZNG) was formed in May 1991 because the Yugoslav People's Army (JNA) increasingly supported the RSK and the Croatian Police were unable to cope with the situation. The ZNG was renamed the HV in November. The establishment of the Republic of Croatia Armed Forces was hampered by a UN arms embargo introduced in September. The final months of 1991 saw the fiercest fighting of the war, culminating in the Battle of the barracks, the siege of Dubrovnik, and the Battle of Vukovar.

In January 1992, the Sarajevo Agreement was signed by representatives of Croatia, the JNA, and the UN, and fighting between the two sides was paused. After a series of unsuccessful ceasefires, the United Nations Protection Force (UNPROFOR) was deployed to Croatia to supervise and maintain the agreement. The conflict largely passed on to entrenched positions and the JNA retreated from Croatia into Bosnia and Herzegovina, where a new conflict was anticipated. Serbia continued to support the RSK after the JNA pullout.

As the JNA disengaged from Croatia, its personnel prepared to set up a new Bosnian Serb army; Bosnian Serbs declared the Serbian Republic of Bosnia and Herzegovina on 9 January 1992. Between 29 February and 1 March 1992, a referendum on the independence of Bosnia and Herzegovina—which would later be cited as a pretext for the Bosnian War—was held. Bosnian Serbs set up barricades in the capital Sarajevo and elsewhere on 1 March, and the next day the first fatalities of the war were recorded in Sarajevo and Doboj. In the final days of March, the Bosnian Serb army started shelling Bosanski Brod, and the HV 108th Brigade crossed the border adjacent to the town in reply. and on 4 April, Serb artillery began shelling Sarajevo. The JNA and the VRS in Bosnia and Herzegovina were confronted by the Army of the Republic of Bosnia and Herzegovina (ARBiH) and the Croatian Defence Council (HVO), under the control of the Bosniak-dominated central government and the Bosnian Croat leadership respectively. The HV sometimes deployed to Bosnia and Herzegovina to support the HVO.

In April 1992, the JNA renewed its offensive operations against the HV and the HVO near Kupres and Stolac in western and southern Herzegovina. The JNA's 2nd Military District, commanded by Colonel-General Milutin Kukanjac, deployed elements of the 5th Banja Luka Corps and the 9th Knin Corps to the Kupres area, capturing the town from the HV and the HVO jointly defending the area in the Battle of Kupres on 7 April 1992 and threatening Livno and Tomislavgrad to the south-west. The 4th Military District of the JNA, commanded by General Pavle Strugar, employed the 13th Bileća Corps and the 2nd Titograd Corps to capture Stolac and most of the eastern bank of the Neretva River south of Mostar. The JNA attacked Mostar with artillery and fighting around the city started on 6 April, and the Yugoslav Air Force attacked Široki Brijeg on 7–8 April. A Croatian attack on 9 April failed to capture a JNA-controlled airfield in Mostar. On 11 April, the Bosnian Serb Territorial Defence Force captured two nearby hydroelectric power plants on the Neretva River and the JNA pushed the HV/HVO force from Stolac. Čapljina, 25 kilometres (16 miles) south-west of Mostar, came under intermittent JNA artillery and air attacks. A ceasefire was arranged on 7 May, but the JNA and the Bosnian Serb forces resumed the attack the next day. The attack captured a large part of Mostar and some territory on the western bank of the Neretva River. On 12 May, JNA forces based in Bosnia and Herzegovina became part of the VRS.

Although the JNA planned the offensive to preempt a Croatian attack on Serb-held territory, Croatia saw the moves as a prelude to JNA attacks on southern Croatia, specifically aimed at the Port of Ploče and possibly Split. To counter the perceived threat, the HV deployed additional troops to the area, now designated the "Southern Front". HV General Janko Bobetko, appointed to lead the Southern Front, reorganized the HVO command structure and assumed control of its forces in the area to stop the expected JNA/VRS offensive and regain the lost territory. In late May, Bobetko launched an attack along the Adriatic coast and in its immediate hinterland, towards besieged Dubrovnik, linking up with the HV force in the city and ending its encirclement by the JNA on 1 June. The attack coincided with the JNA's withdrawal from the area towards Dubrovnik Airport in Konavle and to positions within the borders of Bosnia and Herzegovina. The border in this area is located 2 to 10 kilometres (1.2 to 6.2 miles) from the coast. On 23 May, the HV/HVO captured Hum Mountain south of Mostar.