---
title: "O Square Icon | Free Download PNG & SVG | Iconoir Regular"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/o-square--29591
canonical_url: "https://www.streamlinehq.com/icons/download/o-square--29591"
summary: "Minimal line icon of a rounded vertical rectangle inside a square. Used for O buttons, letter O labels, and interface controls."
---

# O Square icon

The O Square icon shows a rounded vertical rectangle centered inside a rounded square border. Drawn in the line style on a 16px grid with a 1px stroke for clean, clear small-size rendering. Use it for O buttons, letter O labels, selection controls, and interface navigation. It belongs to Iconoir Regular free set in the Iconoir family.

## Preview

![Minimal line icon of a rounded vertical rectangle inside a square. Used for O buttons, letter O labels, and interface controls.](https://assets.streamlinehq.com/image/private/w_300,h_300,ar_1/f_auto/v1/icons/3/o-square-99dtqpx2gkbzapxiaesvg.png/o-square-su1p1bbxkvef4sp0ccx5t.png?_a=DATAiZkSZAA0)

## Details

- **Name**: O Square
- **Type**: Icon
- **Set**: [Iconoir Regular](/icons/iconoir-regular.md) — Iconoir is a free and open source icon set created by Luca Burgio with clean, consistent design.
- **Family**: [Iconoir](/icons/iconoir.md)
- **Style**: Line, Stroke
- **Category**: All Icons › All Icons
- **Default size**: 16px
- **Stroke width**: 1px
- **Pricing**: Free
- **License**: [MIT](https://github.com/iconoir-icons/iconoir/blob/main/LICENSE)
- **Author**: [Iconoir](https://iconoir.com/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: square, o, hollow, outline, rectangle, button, stop, interface, control, geometry, circle

## Download

- [Download O Square on Streamline](https://www.streamlinehq.com/icons/download/o-square--29591)

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