The spending plan will focus on revamping bars across the country, with the aim of maximising the appeal of the outlets.
The bulk of the spend (60%) will go on nine units, which range from city bars to community pubs, chiefly in the central belt, with an average spend of £268,000 per venue.
The investment also includes the £1.36 million refurbishment of the former Blackfriars pub in Inverness, which has been taken on by experienced operator Billy McAneney.
A six-month refurbishment will restore the Grade B building and see the addition of eight en suite letting rooms, with the outlet to be renamed The Optimist.
Heineken said it has identified an additional £2.88 million of projects it wants to undertake in Scotland, subject to licensee recruitment and planning.
Star Pubs & Bars’ Brian Davidson said: “In our experience, the greater and more visible the changes, the more a pub thrives following investment. We are undertaking transformational projects in order to exceed expectations, provide extra reasons for people to visit and attract new customers as a result.”