Robert Campbell, 5th Laird of Glenlyon (b.1630 d. August 2, 1696), was a minor member of Scottish nobility and is best known as one of the commanding officers at the Massacre of Glencoe.

Robert Campbell inherited Meggernie Castle , in Glenlyon, from his father and set about improving it in a line with current fashions. He roofed it with slates instead of thatch, he enlarged it very substantially and in the process created one of the stately homes of Perthshire. This, along with heavy drinking gambling and a string of unwise investments succeeded pushing him to the brink of bankruptcy. Though he borrowed from his friends, his relatives and his tenants, he still could not meet his debts.

In a last effort to clear his debts, he sold all the woods of Glenlyon which were part of the old Caledonian forest. Workmen arrived from the lowlands to fell the trees, which were sent floating down the Lyon, choking the river, causing widespread flooding and consolidating his financial position.

With Robert Campbell was still unable to satisfy his creditors, his own tenants offered him half their cattle to pay off his debts but he refused and sold almost all of the estate to the Earl of Tullibardine in 1684. All that he retained was Chesthill, a few miles from Fortingall, which belonged to his wife.

In 1689, on their return from the Battle of Dunkeld, the MacIains of Glencoe looted Glenlyon and razed Campbell's last remaining holdings. In a final effort to support his wife and family Robert Campbell, at the age of fifty nine, joined the Earl of Argyll's Regiment of Foot and came to play his part in the Glencoe massacre.

The Argyll Regiment was defeated by the French armies in Flanders in 1696, and Campbell died in poverty in Bruges on August 2nd 1696, and was survived by a wife, three sons, four daughters.