There are a lot of rectangle poster mockups that you can download for free, but a square poster mockup is really rare to find.
So in this post we try to gather all square poster mockup in PSD template that you can use for your next project.
All of these poster PSD mockups is really simple and easy to use, you can choose mockups and change the image background to fit your need.
See Also: 15+ Awesome Folded Flyers PSD Mockups
13Free Interior Square Metal Poster Frame Mockup PSD 2018

Free interior square metal poster frame mockup psd 2018.that you can use to showcase your artworks via smart-object layer for the final presentation.
12Square Posters Exhibition Mock up

This Square posters exhibition mockup file uses smart object feature which help you change the design just in second.
10Square Poster Frame Mockups

These square flat poster frame mock-ups will let you showcase your advertisement and branding designs in an effective way.
8Free Hanging Vertical, Square & Horizontal Poster Mockup PSD

A hanging poster mockup psd set available in vertical, square and horizontal shape.
7Square Poster Frame Mockups

Sqaure Frame Mockup. Simply open the smart object and add in your own poster/image.
5Free Professional Square Poster Mockup (PSD)

This mockup features a simple wooden frame which will house your awesome poster, surrounded by plants resting on a glossy white surface.
4Outdoor Square Vinyl Banner Mock-Up

Outdoor Square Vinyl Banner Mock-Up. Easy to customize well grouped and named layers.
3Free Square Hanging Wooden Poster Frame Mockup

The awesome freebie of the day is Free Hanging Wooden Poster Frame Mockup.
2Photoshop Square Poster Mockup

Photoshop square mockup template tool for posters or art prints with 4 different photorealistic poster sizes.