Here are some sources of data sets I have gathered.

General

Kaggle

Open Public Datasets

Chocolate Ratings

King County, WA Housing Prices

University

CMU Data and Story Library

Berkley

Datasets for Using R

Time Series

Many free time series data sets over a variety of topics

Google trends in search queries

Yahoo financial and stock market data

Federal Reserve economic data

World Bank economic data

Kaggle Time Series data sets

Other

Many data tables from the United Nations

ICPSR extensive social science data bases

100+ Interesting Data Sets for Statistics

Humanitarian Data Exchange

European Environment Agency

Statistical Science Web: Data Sets

35 Free Datasets

Github Public Data Sets

Airline Flight Data

Public Datasets

Gapminder World

World Atlas

General Listings

USD-Euro

Crude Oil

30-year Fixed Rate Mortgage USA Average

Government

CDC

CDC Vital Statistics

CDC Covid Vaccine Trends

American Community Survey Data

US Census

US Census 2000

Working with Census Data

US Government I

US Government II

Dataferrett Census

BLS

San Francisco Government

Sports

NBA Basketball Statistics

Football Analytics

databaseSports.com

From the Tableau Community

Data Sets