---
title: "Sigma Icon | Free Download PNG & SVG | Lucide Line"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/sigma--29182
canonical_url: "https://www.streamlinehq.com/icons/download/sigma--29182"
summary: "Clean line icon of a Greek sigma-shaped zigzag with open right ends. Used for math, summation, equations, and formulas."
---

# Sigma icon

The Sigma icon shows a Greek sigma-shaped zigzag with horizontal top and bottom strokes and open right ends. Drawn in the line style on a 24px grid with a 2px stroke so it stays clear at small sizes. Use it for mathematics, summation notation, equations, formulas, and educational or scientific interfaces. It belongs to Lucide Line free set in the Lucide family.

## Preview

![Clean line icon of a Greek sigma-shaped zigzag with open right ends. Used for math, summation, equations, and formulas.](https://assets.streamlinehq.com/image/private/w_300,h_300,ar_1/f_auto/v1/icons/all-icons/sigma-fa192.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Sigma
- **Type**: Icon
- **Set**: [Lucide Line](/icons/lucide-line.md) — Lucide is a free and open source icon set created by Eric Fennis and team with modern design.
- **Family**: [Lucide](/icons/lucide.md)
- **Style**: Line, Stroke, Minimal
- **Category**: All Icons › All Icons
- **Default size**: 24px
- **Stroke width**: 2px
- **Pricing**: Free
- **License**: [ISC](https://lucide.dev/license)
- **Author**: [Lucide](https://lucide.dev/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: sigma, greek, summation, math, symbol, letter, outline, rounded, geometric, monochrome

## Download

- [Download Sigma on Streamline](https://www.streamlinehq.com/icons/download/sigma--29182)

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