Black flags flew outside the vast Mosalla mosque, while high-ranking officials including city mayor Bagher Ghalibaf joined the emotional funeral procession.
The 15-storey Plasco building, home to a shopping centre and hundreds of clothing suppliers, collapsed two weeks ago while emergency services were still evacuating people from a huge fire.
The bodies of four civilians have also been pulled from the debris, and six more are missing.
The 16 firefighters were to be buried in the "martyrs" section of a south Tehran cemetery.
One tearful onlooker, 27-year-old Tahereh Sheydayi, said: "They gave their lives for us. We see it as our duty to attend."
The disaster sent a shockwave across Iran, topping the news agenda for a week as rescue teams worked round the clock to recover bodies from the rubble.
The owners and city officials have been criticised for failing to prevent the disaster at the building, which according to the fire brigade was known to breach multiple safety regulations.
Disclaimer: No Business Standard Journalist was involved in creation of this content
You’ve hit your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Access to Exclusive Premium Stories Online
Over 30 behind the paywall stories daily, handpicked by our editors for subscribers


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app