What is the most modern/newest/recent MacBook Pro that runs Mavericks?

These are all the supported machines:

• iMac (Mid-2007 to Mid-2014)
• MacBook (13" Late 2008 Aluminum, Early 2009 to Mid-2010)
• MacBook Pro (13" Mid-2009 to Mid-2014)
• MacBook Pro (15" Mid/Late 2007 to Mid-2014)
• MacBook Pro (17" Late 2007 to Late 2011)
• MacBook Air (Late 2008 to Early 2014)
• Mac mini (Early 2009 to Late 2012)
• Mac Pro (Early 2008 to Late 2013)
• Xserve (Early 2009)

Any machines after Mid-2014 won't support Mavs, as they'd likely have shipped with Yosemite. You can't install an earlier OS than what came on the machine.

Hope this helps!

 

Yes, Mid-2014 MBPro is the latest model that will still run Mavericks.

(keysofanxiety types too fast for me )