One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
An abstract texture of black metal pipes (seamless).
Source V. Hartikainen
I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
The image depicts a seamless pattern of a Japanese family crest called "chidori" in Japanese .A chidori in Japanese means a plover in English.
Source Yamachem
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
ZeroCC tileable moss texture, photographed and made by me. CC0
Source Sojan Janso
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
Retro Circles Background 8 No Black
Source GDJ
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
A blue gray fabric-like texture for websites. An yet another fabric-like texture. It has subtle vertical and diagonal stripes to it.
Source V. Hartikainen
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
A heavy dark gray base, some subtle noise and a 45-degree grid makes this look like a pattern with a tactile feel to it.
Source Atle Mo
The following repeating website background is colored in a blue gray color and resembles a concrete wall or something similar to it.
Source V. Hartikainen
A new take on the black linen pattern. Softer this time.
Source Atle Mo
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
Remixed from a drawing in 'A Child of the Age', Francis Adams, 1894.
Source Firkin
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
From a drawing in 'A Life Interest', Mrs Alexander, 1888.
Source Firkin