ARMS: Argent three Stalks of Flax interlaced proper tied with a Riband Azure in chief a Saxon Crown Gules all within a Bordure Vert thereon eight Roses of the first barbed and seeded also proper.
CREST: On a Wreath Argent and Gules out of a Circlet of Oak fructed proper a winged Lion rampant Gules langued Azure holding in the forepaws a Fetterlock Or.

Motto 'PROGRESS WITH HONOUR AND DIGNITY.
Granted 20th March 1953.

No further information currently available.

*ARMS: Argent a Lion rampant Azure on a Chief Sable three Ships Or sails Argent.
*CREST: Upon a Mural Crown Or charged with three Anchors Sable a Lion passant Azure; Mantled Azure doubled Argent.

Motto 'ERIMUS' - We shall be.
Granted 8th November 1911.

The blue lion is from the arms of the Brus family, who after the Norman Conquest were given many Lordships in this area. Robert de Brus of Skelton founded a priory where Middlesbrough now stands in the twelfth century. The ships and the anchor are for shipbuilding and maritime trade.
The mural crown is a common symbol of municipal government.
The motto was suggested by the Brus family motto - "Fuimus" - We Have Been. Middlesbrough chose to have "Erimus" - We Shall Be.

ARMS: Gules an Eagle displayed wings inverted Or grasping in the claws two Swords in saltire proper hilted and pommelled Gold on a Chief wavy of the last three Abbots' Crozier Heads Azure.
CREST: On a Wreath of the Colours out of a Mural Crown Azure charged with three Roses Argent barbed and seeded proper a Stag's Head holding in the mouth an Ear of Wheat stalked leaved and slipped also proper and gorged with a Collar Ermine.

Motto 'VI DEI TERRAEQUE' - ?.
Granted 22nd September 1955.

No further information currently available.

ARMS: Argent an ancient Ship sails furled pennons flying Sable on a Chief Azure on a Pale Sable fimbriated and between two Crucibles Argent a Basilisk Or.
CREST: On a Wreath Argent and Azure on a grassy Mount proper an Anchor Or between two Cogwheels Sable.
SUPPORTERS: On the dexter side a Lion Or resting the interior hind paw on three Ingots of Steel proper and on the sinister side a Seahorse Argent scales dorsal fin and tail Or each collared Azure thereon a Barrulet wavy Argent the whole upon a Compartment per pale of a grassy Mount and Waves of the Sea proper.
BADGE: A Tau Cross Azure enfiling a Mural Crown Or.

Motto 'PROGRESS IN UNITY'.
Granted 26th March 1968.

The County Borough of Teesside was formed on 1st April 1968 by the amalgamation of the County Borough of Middlesbrough, the Borough of Redcar, the Borough of Stockton-on-Tees, the Borough of Thornaby, the majority of the Billingham Urban District, the Eston Urban District, part of the Stockton Rural District and some smaller areas from other surrounding districts. The entirety of Teesside, including the parts north of the River Tees historically in County Durham, was associated with the North Riding of Yorkshire for lieutenancy and other purposes and is therefore placed in this section.

The ancient ship represents the area's long association with shipping - both for trade and building. The two crucibles symbolise the steel industry and the two white vertical rails between them are a reminder that the first passenger railway in the world had its terminus at Stockton. Between the rails is a basilisk, whose stare turned people to stone, representing Teesside's vast modern chemical industry.
The cogwheels recognise Teesside's engineering industries and the anchor is another reference to the area's maritime associations.
There is another allusion to steel in the three ingots on which the lion rests a paw. The seahorse portrays the sea trade of the Tees. The whole rests on a grassy mount and waves of the sea.