Lawwell, the nominee of the professional game board, joins the four SFA office bearers: chief executive Stewart Regan, president Campbell Ogilvie, vice-president Alan McRae, and second vice-president Rod Petrie, on the board along with Barrie Jackson, the independent non-executive director.
Lawwell said: "Clearly I am pleased to accept this nomination.
"Whilst there are certain challenges facing the game in Scotland, there is also a great deal to be positive about and much to look forward to.
"We must build on these positives and along with other Board members I look forward to playing my part in working to improve and develop various aspects of the game, for the benefit of Scottish football as a whole".
The non-professional game board will make its nomination at the next meeting.