The image depicts an edo-era pattern called "same-komon" or "鮫小紋"which looks like a shark skin.The "same" in Japanese means shark in English.
Source Yamachem
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
You guessed it – looks a bit like cloth.
Source Peax Webdesign
A pattern derived from part of a fractal rendering in Paint.net.
Source Firkin
Prismatic Polka Dots 3 No Background
Source GDJ
One can never have too few rice paper patterns, so here is one more.
Source Atle Mo
Black brick wall pattern. Brick your site up!
Source Alex Parker
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
This light yellow background pattern consists of an irregular pattern of spots. Here's a light background pattern with yellowish tint.
Source V. Hartikainen
Prismatic Geometric Tessellation Pattern No Background
Source GDJ
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
Prismatic Triangular Seamless Pattern III With Background
Source GDJ
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Continuing the geometric trend, here is one more.
Source Mike Warner
Here's a dark background pattern that contains a steel grid pattern as a texture. Use it as a website background or for other purposes. It's free!
Source V. Hartikainen
This could be a hippy vintage wallpaper.
Source Tileable Patterns
Remixed from a drawing in 'Paul's Sister', Frances Peard, 1889.
Source Firkin
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.