A job seeker with an English-sounding name was offered three times the number of interviews than an applicant with a Muslim name, a BBC test found.
Inside Out London sent CVs from two candidates, "Adam" and "Mohamed", who had identical skills and experience, in response to 100 job opportunities.
Adam was offered 12 interviews, while Mohamed was offered four.
Although the results were based on a small sample size, they tally with the findings of previous academic studies.
These have found British Muslims are less proportionately represented in managerial and professional occupations than any other religious group.
The fake candidates applied for 100 jobs as business managers in the competitive field of advertising sales in London.
After two and a half months, Adam was offered three times more interviews than Mohamed.
The two CVs were also uploaded to four job sites. Adam was contacted by four recruiters, but Mohamed only two.
Prof Tariq Modood from the University of Bristol analysed the BBC's findings. He said: "What we've identified very clearly is that the Muslim-sounding person's CV is only likely to get an interview in one out of three cases.
"I thought the response rate would be less than 50 per cent [for the Muslim-sounding name] so it's worse than I thought, especially in a city like London.
"It's so diverse, people coming in and out of the city, from different parts of the world, looking for work, a city very hungry for talent. Yes, it's worse than I thought."
Muslim men are 76% less likely to be employed than their white Christian counterparts, according to research by the Research Centre for the Study of Ethnicity and Citizenship at the University of Bristol.
The last census in 2011 showed Muslims make up just over 1 million of the capital's 8.2 million inhabitants.
But more than half of Muslim households are in poverty, higher than any other social group, according to the Muslim Council of Britain.
Previous studies have shown an employment bias.
A field experiment for the Department for Work and Pensions in 2009 found ethnic minority applicants were discriminated against in favour of white applicants in 29% of cases.
In 2015, a report by the charity Demos found British Muslims were less proportionately represented in managerial and professional occupations than any other religious group.
Khalil Ur Rahman, an unemployed chartered surveyor, said: "I'm in between jobs at the moment. It's quite clear that it's not my qualifications or skill set that is the issue. It is my religion.
"I have seen many people who are less skilled than me but have risen up into more senior management positions, much faster and much quicker because their face fits."
He has taken legal action over what he sees as discrimination.
