The 6th Heavy Field Artillery Regiment (Italian: 6° Reggimento Artiglieria Pesante Campale) is an inactive artillery regiment of the Italian Army, which was based in Treviso in Veneto and assigned to the 5th Army Corps.

During World War II the regiment formed two army corps artillery groupings, one of which was transferred to the 11th Army Corps Artillery Regiment, while the other grouping participated in 1941 in the invasion of Yugoslavia and then remained there on occupation duty.

The regiment and its remaining grouping were disbanded by invading German forces after the announcement of the Armistice of Cassibile on 8 September 1943.

[1] This article is about the Royal Italian Army's 6th Heavy Field Artillery Regiment, which was a support unit assigned to a corps-level command.

The depot also formed the command of the XXVIII Howitzers Group, and the commands of the III, IV, VII, X, XII, XV, XVII, XX, XXII, XXIV, XXVI, XXVIII, XXXII, XXXIV, XXXIX, XL, XLI, and XLIII cannon groups.

The depot was disbanded by invading German forces after the announcement of the Armistice of Cassibile on 8 September 1943.

In 1953 the regiment formed the III Group with 149/19 heavy howitzers, which was disbanded on 1 April 1955.

The group consisted of a command, a command and services battery, and a specialists battery, which provided weather-ballistic data to the division's two heavy self-propelled field artillery groups and to the artillery groups of the division's Mechanized Brigade "Gorizia", Mechanized Brigade "Trieste", and Armored Brigade "Vittorio Veneto".

[3] In 1986 the Italian Army abolished the divisional level and consequently the Mechanized Division "Folgore" was disbanded on 31 October 1986.

The group was named for the hill of Montello, which had been a key observation post for Royal Italian Army artillery observers during the First Battle of the Piave River in November 1917 and saw some of the fiercest fighting between Italian and Austro-Hungarian troops during the Second Battle of the Piave River in June 1918.

On 13 July 1987 the President of the Italian Republic Francesco Cossiga confirmed the assignment of the flag of the 6th Heavy Field Artillery Regiment to the group.