- John Cochrane: economics https://johnhcochrane.blogspot.com
- Interfluidity (Steve Randy Waldman): all over the place, but mostly economics-focused https://www.interfluidity.com
- FT Alphaville: finance and economics, free signup required https://ftalphaville.ft.com
- Money Stuff (Matt Levine): finance and economics, very entertaining and accessible https://www.bloomberg.com/view/contributors/ARbTQlRLRjE/matt...
- Andrew Gelman: statistics with an emphasis on applications in the social sciences http://andrewgelman.com
- Flowing Data (Nathan Yau): data visualization and statistics https://flowingdata.com
- Shravan Vasishth: statistics and statistical computing, often very technical https://vasishth-statistics.blogspot.com
- Rasmus Bååth: statistics and statistical computing (inactive but worth mentioning) http://www.sumsar.net/blog/archives