A French court gave the men suspended sentences of three to four months for organised violence, while two others were found not guilty.
Another 11 were handed â‚¬500 (Â£425; $530) fines for property damage.
The October 2015 protest made headlines across the world after the executives were filmed climbing a fence to escape.
A hundred people protesting against restructuring plans broke down a fence and invaded a boardroom at Air France headquarters in the Parisian suburb of Roissy, next to Charles de Gaulle Airport, forcing the executives to flee.
Air France-KLM was considering cutting almost 3,000 jobs and extending pilots' working hours. The proposal has since been dropped.
But as the executives fled, the angry mob - who were chanting "naked, naked" and "resignation" - began to pull the clothes from their backs. They were left with no option but to scramble over the wire fence to safety.
Pierre Plissonnier, director of long-haul operations at the airline, told the court of his "humiliation" at seeing pictures of himself scrambling over a fence to escape the mob, his shirt and suit jacket hanging in tatters.
Human resources director Xavier Broseta had his shirt entirely ripped from his body.
Most of the 15 who faced trial - four of whom have been fired - were union members.
The violence of the protest shocked France, with Prime Minister Manuel Valls calling for the defendants, whom he branded "rogues", to be given stiff sentences.
But Lilia Mhissen, lawyer for 11 of the defendants, said the verdict was "outrageous" and that she would advise her clients - whom she described as scapegoats - to file an appeal.
Only one person walked away from the court in Bobigny, a suburb of Paris, without being convicted of any charge.

Friends Eddy Corlett, 30, and Colm Connolly, 32, set off from Darwin in November and have ridden 18,641 miles (30,000 km) through 17 countries.
Mr Corlett said their arrival was "very emotional" and they were "looking forward to watching the TT races".
The men also travelled on a container ship, nine car ferries, a banana boat and travelled 621 miles on trains.
Mr Corlett said: "I'm really looking forward to letting our hair down and enjoying the races."
"It was a big relief to get here and we were very emotional arriving in Douglas. I'm a little bit sad for it to be over but it's a real sense of achievement getting here."
The men, who dreamt up the idea after hearing they were to made redundant, have had to cope with floods, soaring temperatures, snow showers and dust clouds on their way.
Around 45,000 visitors are expected during this year's Isle of Man TT fortnight, with the first racing on Saturday.

Joel Richards, 20, was left at Birmingham's City Hospital on Sunday, where he died from his injuries.
West Midlands Police said a 17-year-old arrested at a service station on the M40 near Oxford on Monday had been charged with Mr Richards' murder.
The teenager, who cannot be named due to his age, will appear at Birmingham Magistrates' court on Thursday.
Three former Air France employees have been found guilty of ripping the shirts from the backs of two executives fleeing a meeting about job cuts.
[NEXT_CONCEPT]
Two men have completed an epic seven-month motorcycle journey from Australia to the Isle of Man for the TT races.
[NEXT_CONCEPT]
A teenager has been charged with the murder of a man who was left outside a hospital after being stabbed.