---
title: "Sigma Icon | Free Download PNG & SVG | Cyber Duotone"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/sigma--17170
canonical_url: "https://www.streamlinehq.com/icons/download/sigma--17170"
summary: "Sharp duotone icon of an angular uppercase sigma with horizontal top and bottom bars. Used for math, summation, and formulas."
---

# Sigma icon

The Sigma icon shows an angular uppercase sigma formed by horizontal top and bottom bars joined by diagonal lines. Drawn in the duotone style on a 24px grid with a 1px stroke so its sharp geometry stays clear at small sizes. Use it for mathematical notation, summation controls, formulas, and educational or data interfaces. It belongs to Cyber Duotone set in the Cyber family.

## Preview

![Sharp duotone icon of an angular uppercase sigma with horizontal top and bottom bars. Used for math, summation, and formulas.](https://assets.streamlinehq.com/image/private/w_240,h_240,ar_1/f_auto/v1/icons/text/sigma-tuywmbnhtyprjw3saukyq.png/sigma-7bxuu4usd6q1krjdeuopcy.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Sigma
- **Type**: Icon
- **Set**: [Cyber Duotone](/icons/cyber-duotone.md) — Cyber features only straight lines and sharp angles. The Duotone variant uses two colors to enhance the futuristic appearance.
- **Family**: [Cyber](/icons/cyber.md) — Icons from the future
- **Style**: Duo, Geometric, Stroke, Filled
- **Category**: Text › Text
- **Default size**: 24px
- **Stroke width**: 1px
- **Pricing**: Pro
- **License**: [Commercial](https://home.streamlinehq.com/license-premium)
- **Author**: [Streamline](https://home.streamlinehq.com/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: sigma, greek, sum, math, formula, addition, calculate, equation, algebra, parameter, font, text, typography, alphabet, arrow

## Download

- [Download Sigma on Streamline](https://www.streamlinehq.com/icons/download/sigma--17170)

## Also available in other styles

- [Sigma — Cyber Line](/icons/download/sigma--17070.md) (Pro)

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