18mm Watch Strap Collection

18mm Watch Straps

18mm suits lots of classic and vintage men's watches and many women's watches, usually with cases around 36–39mm.

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538 products

Timeless classic black leather watch strap featuring a square end, enhanced with soft nubuck lining. Available in 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm & 22mm.
Mayfair Subtle Black Watch Strap
Sale price£18

8 colour options
Gold or silver buckle

Buffalo Stitched Brown Watch Strap
Buffalo Stitched Brown Watch Strap
Sale price£16

2 colour options
Gold or silver buckle

Timeless classic tan leather watch strap featuring a square end, enhanced with soft nubuck lining. Available in 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm
Mayfair Subtle Tan Watch Strap
Sale price£18

8 colour options
Gold or silver buckle

Bestseller
Black Unstitched Smooth Leather Watch Strap - 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm
Windsor Smooth Black Watch Strap
Sale price£16

18 colour options
Gold or silver buckle

Alligator Value Padded Black Watch Strap
Alligator Value Padded Black Watch Strap
Sale price£15

5 colour options
Gold or silver buckle

Alligator Value Padded Tan Watch Strap
Alligator Value Padded Tan Watch Strap
Sale price£15

5 colour options
Gold or silver buckle

Bestseller
Green Unstitched Smooth Genuine Leather Watch Strap 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm
Windsor Smooth Green Watch Strap
Sale price£16

18 colour options
Gold or silver buckle

Bestseller
Dark Blue Unstitched Smooth Genuine Leather Watch Strap 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm
Windsor Smooth Dark Blue Watch Strap
Sale price£16

18 colour options
Gold or silver buckle

Open Ended Buffalo Brown Watch Strap
Open Ended Buffalo Brown Watch Strap
Sale price£22

2 colour options
Gold or silver buckle

Calf Value Cream Watch Strap
Calf Value Cream Watch Strap
Sale price£13

6 colour options
Gold or silver buckle

Brown Curved End Alligator Grain Leather Watch Strap 18m, 20mm, 22mm & 24mm
Alligator Curved Brown Watch Strap
Sale price£32

2 colour options
Gold or silver buckle

Bestseller
Tan Unstitched Smooth Genuine Leather Watch Strap 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm
Windsor Smooth Tan Watch Strap
Sale price£16

18 colour options
Gold or silver buckle

Buffalo Stitched Black Watch Strap
Buffalo Stitched Black Watch Strap
Sale price£16

2 colour options
Gold or silver buckle

Bestseller
Light Blue Unstitched Smooth Genuine Leather Watch Strap 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm
Windsor Smooth Light Blue Watch Strap
Sale price£16

18 colour options
Gold or silver buckle

XXX Long
Windsor Heavy XXL Black Watch Strap
Windsor Heavy XXL Black Watch Strap
Sale price£26

2 colour options
Gold or silver buckle

Buffalo Value Brown Watch Strap
Buffalo Value Brown Watch Strap
Sale price£14

6 colour options
Gold or silver buckle

Quick Release
Windsor Smooth Quick Release Pink Watch Strap
Windsor Smooth Quick Release Pink Watch Strap
Sale price£18

7 colour options
Gold or silver buckle

Smooth Curved Black Watch Strap
Smooth Curved Black Watch Strap
Sale price£28

3 colour options
Gold or silver buckle

Blue Mayfair Lizard watch strap, laid flat with its buckle
Mayfair Lizard Blue Watch Strap
Sale price£19

7 colour options
Gold or silver buckle

Black Curved End Alligator Grain Leather Watch Strap 18m, 20mm, 22mm & 24mm
Alligator Curved Black Watch Strap
Sale price£32

2 colour options
Gold or silver buckle

Black Mayfair Lizard watch strap, laid flat with its buckle
Mayfair Lizard Black Watch Strap
Sale price£19

7 colour options
Gold or silver buckle

XXX Long
Windsor XXXL Black Watch Strap
Windsor XXXL Black Watch Strap
Sale price£22

2 colour options
Gold or silver buckle

Bestseller
Grey Unstitched Smooth Genuine Leather Watch Strap 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm
Windsor Smooth Grey Watch Strap
Sale price£16

18 colour options
Gold or silver buckle

Black Mayfair Super watch strap, laid flat with its buckle
Mayfair Super Black Watch Strap
Sale price£24

3 colour options
Gold or silver buckle

Alligator Value Padded Blue Watch Strap
Alligator Value Padded Blue Watch Strap
Sale price£15

5 colour options
Gold or silver buckle

Open Ended Buffalo Black Watch Strap
Open Ended Buffalo Black Watch Strap
Sale price£22

2 colour options
Gold or silver buckle

Timeless classic grey leather watch strap featuring a square end, enhanced with soft nubuck lining. Available in 12mm, 14mm, 16mm, 18mm, 20mm, 22mm
Mayfair Subtle Grey Watch Strap
Sale price£18

8 colour options
Gold or silver buckle

Brown Mayfair Alligator watch strap, laid flat with its buckle
Mayfair Alligator Brown Watch Strap
Sale price£28

10 colour options
Gold or silver buckle

SustainableVegan
Mimic Nature Brown Watch Strap
Mimic Nature Brown Watch Strap
Sale price£24

4 colour options
Gold or silver buckle

Extra Long
Buffalo Value XL Blue Watch Strap
Buffalo Value XL Blue Watch Strap
Sale price£16

6 colour options
Gold or silver buckle

18mm Watch Strap Questions

18mm is one of our biggest ranges, with over 500 straps. Most are leather, from smooth calf to alligator, croc and lizard grain, alongside handmade straps for something special. For everyday wear and the outdoors, nylon and military-style straps are hard-wearing, and waterproof options cope with swimming and the gym. If you swap straps often, our quick release straps change in seconds without a tool.

Not sure 18mm is right? Measure between the lugs where the strap attaches. Our guide to measuring a watch strap shows you how. Between sizes? Have a look at 17mm, 19mm or 20mm.

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