The Northumbrian smallpipes (also known as the Northumbrian pipes) are bellows-blown bagpipes from Northeastern England, where they have been an important factor in the local musical culture for more than 250 years. The family of the Duke of Northumberland have had an official piper for over 250 years. The Northumbrian Pipers' Society was founded in 1928, to encourage the playing of the instrument and its music; Although there were so few players at times during the last century that some feared the tradition would die out, there are many players and makers of the instrument nowadays, and the Society has played a large role in this revival. In more recent times the Mayor of Gateshead and the Lord Mayor of Newcastle have both established a tradition of appointing official Northumbrian pipers.

In a survey of the bagpipes in the Pitt Rivers Museum, Oxford University, the organologist Anthony Baines wrote: "It is perhaps the most civilized of the bagpipes, making no attempt to go further than the traditional bagpipe music of melody over drone, but refining this music to the last degree."

The instrument consists of one chanter (generally with keys) and usually four drones. The cylindrically bored chanter has a number of metal keys, most commonly seven, but chanters with a range of over two octaves can be made which require seventeen or more keys, all played with either the right hand thumb or left little finger. There is no overblowing employed to get this two octave range, so the keys are therefore necessary, together with the length of the chanter, for obtaining the two octaves.

The Northumbrian smallpipes' chanter having a completely closed end, combined with the unusually tight fingering style (each note is played by lifting only one finger or opening one key) means that traditional Northumbrian piping is staccato in style. Because the bores are so narrow, (typically about 4.3 millimetres for the chanter), the sound is far quieter than most other bagpipes.

A detailed account of the construction of Northumbrian smallpipes written by William Alfred Cocks and Jim F. Bryan was published in 1967 by the Northumbrian Pipers' Society; it was very influential in promoting a revival of pipemaking from that time. This is now out of print, however. Another description, by Mike Nelson, is currently available. Nelson's designs also include the "School Pipes", G-sets with plastic components, made to be used in schools in Northumberland. These two accounts differ rather in their objectives, as Cocks and Bryan was based on descriptions of existing sets, notably by Robert Reid, Nelson being a description of his own design.

The earliest known description of such an instrument in Britain is in the Talbot manuscript from about 1695. The descriptions of bagpipes mentioned in this early source are reproduced in One of these instruments was a bellows-blown 'Bagpipe, Scotch', with three drones, whose keyless chanter had a one-octave range from G to g, with each note being sounded by uncovering a single hole, as in the modern instrument. This seems to have been a closed-ended chanter, for the lowest note is sounded by uncovering the lowest finger-hole – there was no bell-note, sounding with all holes covered; further, Talbot did not give the bore of the chanter, suggesting that it could not easily be measured. The three drones were in unison with the lowest note, G, of the chanter, the D a fourth below it, and G, an octave below. It has been argued that such instruments were derived from mouth-blown German three-drone bagpipes. These instruments seem to have been well-established in Northumberland by the early 18th century; many of the tunes in the William Dixon manuscript are suitable for such simple sets, and a painting of Joseph Turnbull, Piper to the Duchess of Northumberland, in Alnwick Castle, shows him with such a set. When Thomas Doubleday published an open letter in 1857, to the Duke of Northumberland about the "ancient music of Northumberland", he wrote that "The Northumbrian pipe is played upon by means of the method called 'close fingering', for which it is calculated. This method of stopping allows only of one finger being lifted at a time. Thus this instrument is limited to a single octave; and this (little as it is) admits of all the airs, to which it is really suited, being executed by its means; with the additional improvement that it may be played perfectly in tune, whilst the tones it produces being staccato and of a clear, ringing, pearly and brilliant character, gives the instrument a power which its appearance by no means promises, and which is really surprising when the diminutive size of its chanter or melody-pipe is considered". This is still a valid description of the unkeyed instrument, its repertoire, and proper playing style.

Although keyless chanters seem to have been common for much of the 18th century, the earliest evidence of the introduction of a keyed chanter is the illustration and fingering chart in John Peacock's tunebook, A Favorite Collection of Tunes with Variations Adapted for the Northumberland Small Pipes, Violin, or Flute, first published by William Wright, of Newcastle, in about 1800.

The first of these were probably made by John Dunn. The instrument depicted in Peacock's tunebook had only four keys, for F sharp, E and D below the octave G-g range of the unkeyed instrument, and another for the ^{[clarification needed]} an above it. Two early pipe tunes written for such an instrument are "Lamshaw's Fancy", and "Shields Fair". Lamshaw died in 1806, but is known to have played the 'improved smallpipes'; although only one of these tunes bears his name, the other probably commemorates the Tynemouth and North Shields Fair, inaugurated in 1804. Lamshaw played there in his capacity as the Duke's piper.