Yes, I go to the Catholic Church on Sunday evenings (out by the industrial area, about a 20 mins drive from Al Waab). This is the only Catholic Church in Doha. Have a look at their website for mass timings : www.rosarychurchqatar.com
Last night they closed the car park for security reasons so we had to park in the desert area opposite the church and then go through an x-ray machine before entering the church itself. Leaving was a nightmare as they closed the roads out of the church and made everybody drive miles into the desert, I had no idea where I was going and was very glad that it was daylight. As a result it took me 2 hrs to drive home to Al Waab so I really hope that this does not happen on a regular basis. They have closed the car park before but always kept the roads open.
The only Catholic Church I know of is the official one near the industrial area. I don't go there - but have friends who attend regularly. There are various services throughout the week in different languages - French, Spanish, Italian, English, Malayam, Tagalog, etc. Website: http://www.rosarychurchqatar.com/
I have always found churches to be welcoming and an excellent place to meet people -- not a place to worry about knowing people beforehand. I would say pick your language and you are likely to find people of a similar background. And of course- everyone would be an expat-- don't think there are any Qataris going to mass!
Has anyone attended services in either one of the Catholic Churches here in Doha (one you were able to find them of course)? I know locations but wondered when if any expats had attended with other expats on a regular basis and if so, where and what day and time? Thanks.