Iron Viz

Where will the next great data viz come from?

What is Iron Viz?

Iron Viz—the world’s largest virtual data visualization competition—ignites and showcases the power of the Tableau Community, giving you the opportunity to interact with data rockstars worldwide. Three finalists will advance to the 2021 Iron Viz Championship this November.


2021 Iron Viz Finalists Have Been Announced!

Congratulations to our viz-tastic finalists. You can watch a recap of the Tableau Community Iron Viz Top 10 Finalist Announcement hosted by Andy Cotgreave and Keshia Rose here. They were joined by guest judge & Zen Master, Tim Ngwena who shared some insights about themes, trends, judging criteria, and more.

You can also learn more about the Top 10 and who was chosen to compete in the Iron Viz Championship by visiting our 2021 Data+Joy Iron Viz Results blog post.  

Be sure to save the date and tune in to the Iron Viz Championship at Tableau Conference 2021.

Watch Now: 2021 Iron Viz Qualifier Announcement Show

Hear who made up our top 10 and which three will advance to the Iron Viz Finals in November. WATCH now

2021 Iron Viz Finalist: Sam Parsons

Interact with Sam's brilliant viz on "Rivers of Time" -- a graphic visualization on the study of various components of time in the Marvel Cinematic Universe. The visualization will help you learn how all 23 MCU movies intertwine and link together from a unique viewpoint. 

Read More

2021 Iron Viz Finalist: Lisa Trescott

Dive into Lisa's engaging visualization titled, "Rupaul's Drag Race: An analysis of lip syncs." She rewatched all of RuPaul's Drag Race LSFYL to explore trends, the queens and the music that makes these performances her favorite part of the show. 

Read More

Perhaps it was the fact that this was a formal competition or that I spent more time than previous visualizations, but something about this contest allowed me to really up my game. So, while none of them won, I learned so much in creating them, taking a big leap forward in my development, so it was well worth it.

Watch the 2020 Iron Viz

While we wait for the 2021 Iron Viz to take place, relive all of the excitement from the world's largest data visualization contest from 2020. The "environment" category produced some incredible data visualizations from our talented community members. 

Watch Iron Viz 2020

Iron Viz 2021

Date Name Announcements Prizes  
June 2nd, 2021 - July 2nd, 2021

Iron Viz Qualifier*

  • Free registration for Tableau Conference 2021
November 9-11, 2021

Iron Viz Championship

  • 1st place: $10,000 cash prize and $5,000 donation to a nonprofit of choice
  • 2nd place: $5,000 cash prize and $2,000 donation to a nonprofit of choice
  • 3rd place: $2,000 cash prize and $1,000 donation to a nonprofit of choice

2020 Champion

Tableau Conference

The Air We Breathe

Christian Felix

Our 2020 Iron Viz champion Christian Felix used the environment data set given to him to illustrate a story to show a significant global divide between cities that are home to healthy air and cities that are home to unhealthy air.

2019 Champions

Tableau Conference

Diverse Diners

Hesham Eissa

Iron Viz 2019 co-champion Hesham Eissa took the food data set and made maps within maps and transparent sheets to display the diversity of cuisines around the world.

The Taste of America

Joshua Smith

Iron Viz 2019 co-champion Joshua Smith focused on a personal story—a story of how one dinner with a friend drastically changed how he saw the world and the data in it.

Tableau Conference Europe

Predict the Dream

Anna Dzikowska

Iron Viz Europe 2019 co-champion Anna Dzikowska focussed on the predictive powers of five countries that have been successful at picking the winning country.

How did the Eurovision Song Contest go?

Simon Stusak

Iron Viz Europe 2019 co-champion Simon Stusak answered a series of questions: how did a country fare in a given year? What were their average and total points scored? How did they compare to prior years?

Qualifier Contest Resources

Content Type Name  

7 resources to kickstart your Iron Viz entry


Create a compelling Iron Viz entry in ten steps


If Data Could Talk with Iron Viz Champion, Christian Felix


How to find the best sources for free, public data sets


How to create a winning viz


How to save vizzes on Tableau Public


Storytelling with data

Qualifier Contest FAQ

What is the theme and what is the submission deadline?

Contest Theme Announcement Date Submission Deadline
Iron Viz Qualifier Viz what you love June 2, 2021 July 2, 2021

What are the terms of participating?

Please refer to the official rules for the qualifier contest:

How many entries may one person make?

One entry per person. If you need to make changes to your viz after submitting, please make those changes prior to the submission deadline.

Can I use any data?

This qualifier contest allows for any data. Please ensure the data set(s) you choose are related to the theme. Please be considerate of others, and do not use a data set that might be found overly offensive. We would also like you to consider image rights when including visuals in your visualization.

Am I required to make my data set(s) or viz downloadable?

If possible provide a link to your source(s) in the footnote or description of your viz and allow 'Download' for the viz you submit. This allows others to learn from your work, just as you can learn from others. Making vizzes downloadable can be done by signing in to Tableau Public, click on the viz you created, and checking the box "Allow workbook and its data to be downloaded by others", then click save.

Who can I contact if I am having problems with Tableau Public?

You may contact Tableau Public at, please include Viz Contest in the subject line. Note that submissions can only be made via the submission form.

How will the winner be chosen?

A panel of judges comprised of Tableau ambassadors, previous Iron Viz finalists, data viz experts, and guest judges will evaluate all submissions based on the following criteria:

  1. Design
  2. Storytelling
  3. Analysis

Analysis will be the tiebreaker in case two vizzes have the same overall score. Should the Analysis score also be tied, the panel of judges will make a final decision.

Will I receive my scores?

We will publish the scores for the top 10 vizzes on the Tableau Public blog. Scores for the Top 100 entrants can be provided upon request after the contest is over.

Can I receive feedback on my work?

Yes, all entrants will receive their scores after the contest is over. The 'top 10' are eligible to receive additional feedback directly from the judges.

Why isn't my country included in the list of eligible countries for participation?

Some countries are not listed because of peculiar requirements to run a sweepstakes like Iron Viz.

Why are the scores I received in my feedback email higher than the scores of the top 10?

All submissions are scored by a panel of judges. The average of these scores is what you see in your feedback email. From those scores, the ‘top 10’ submissions are identified and provided to a panel of industry expert judges. The scores from this panel are what you see in the results blog posts.