Wood Chips 5 #2103
 Unknow  CC 0

CC0 textures, backgrounds.

Source SliverKnight

 More Textures
Flowery pattern 3 (BW) #2331
 Dark  CC 0

Adapted from a jpg on Pixabay.

Source Firkin

Red & Black Well #1260
 Wall  CC 0

Zerro CC tillable texture of stones photographed and made by me. CC0

Source Sojan Janso

Colorful Floral Background 3 No [email protected] #486
 Light  CC 0

Colorful Floral Background 3 No Black

Source GDJ

Decorative divider 189 #2518
 Dark  CC 0

From a drawing in 'Uit de geschiedenis der Heilige Stede te Amsterdam', Yohannes Sterck, 1898.

Source Firkin

Dark Circles #306
 Dark  CC BY-SA 3.0

People seem to enjoy dark patterns, so here is one with some circles.

Source Atle Mo

Diamond Metal Plate #1397
 Metal  CC 0

Gamedev - Metal Textures. CC0 License.

Source Davit Masia

Prismatic Curved Diamond Pattern 7 No Background #547
 Noise  CC 0

Prismatic Curved Diamond Pattern 7 No Background

Source GDJ

Mix & Blue Pattern #1628
 Metal  CC 0

Metal-Plain or Painted. CC0 License.

Source Unknow

Light Wool #695
 Grid  CC BY-SA 3.0

Submitted as a black pattern, I made it light and a few steps more subtle.

Source Andy

"Gold Buttons", Pale Yellow BG Pattern #1215
 Yellow  CC BY-SA 3.0

This yellow background consists of a pattern of glossy gold buttons arranged in polka dot style on a seamless texture. Here's a pale yellow background pattern. Feel free to use it for your needs!

Source V. Hartikainen

Translucent [email protected] #944
 Light  CC BY-SA 3.0

The file was named striped lens, but hey – Translucent Fibres works too.

Source Angelica

Always [email protected] #54
 Dark  CC BY-SA 3.0

Crossing lines with a subtle emboss effect on a dark background.

Source Stefan Aleksić

Prismatic Polka Dots Mark II No Background #530
 Noise  CC 0

Prismatic Polka Dots Mark II No Background

Source GDJ

Fire diamond #2488
 Diamond  CC 0

U.S.-based National Fire Protection Association standard fire diamond for flagging risks posed by hazardous materials. The red diamond has a number 0-4 depending on flammability. The blue diamond has a number 0-4 depending on health hazard. The yellow has a number 0-4 depending on reactivity. the white square has a special notice, e.g OX for oxidizer.

Source Firkin

Background Patterns - Emerald #252
 Fabric  CC 0

If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117

Source Viscious-Speed

Retro Squares Background [email protected] #419
 Dark  CC 0

Retro Squares Background 4

Source GDJ

Carbon Fiber v2 #105
 Carbon  CC BY-SA 3.0

One more updated pattern. Not really carbon fiber, but it’s the most popular pattern, so I’ll give you an extra choice.

Source Atle Mo

Background pattern 268 #2066
 Dark  CC 0

Remixed from a drawing in 'Kulturgeschichte der Deutschen im Mittelalter' Franz von Loeher, 1891. The unit tile can be had by selecting the rectangle in Inkscape and using shift-alt-i

Source Firkin

Ribbon pattern 2 (version 2, colour 3) #2037
 Colorful  CC 0

The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.

Source Firkin

Vertical Cloth #597
 Dark  CC BY-SA 3.0

You just can’t get enough of the fabric patterns, so here is one more for your collection.

Source Krisp Designs

Background pattern pink #1948
 Pink  CC 0

To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.

Source Firkin

Rice [email protected] #339
 Paper  CC BY-SA 3.0

Scanned some rice paper and tiled it up for you. Enjoy.

Source Atle Mo

Lyonnette #761
 Gray  CC BY-SA 3.0

Small crosses with round edges. Quite cute.

Source Tish

Stone Wall & Gray #1499
 Stone  CC 0

Incoming catena. Stone & well. CC0 texture.

Source Unknow

Nistri #773
 Stripes  CC BY-SA 3.0

No idea what Nistri means, but it’s a crisp little pattern nonetheless.

Source Markus Reiter

Floors & Black #1611
 Wall  CC 0

Floors-Tiles. CC0 License.

Source Unknow

Brilliant #753
 Light  CC BY-SA 3.0

This is so subtle you need to bring your magnifier!

Source Carlos Valdez

Video Game Website Background #1327
 Green  CC BY-SA 3.0

This background pattern has futuristic look. So, maybe it could be used on websites or blogs dedicated to video games?!

Source V. Hartikainen