In my program, these are the ones I know of...

Delta Gamma (me!)
Phi Mu
Kappa Alpha Theta
Pi Beta Phi
Sigma Sigma Sigma
Alpha Kappa Alpha
Delta Upsilon
Zeta Tau Alpha

I don't think I even discussed Greek affiliation with anyone in grad school. I know that there was one disaffiliated Kappa.

In the work world, I thought I'd be meeting Greeks left and right. I even think I might be the only one in my 70-person office!

in my MSW I know of
1- Alpha Phi
1- Chi Omega
1- Alpha Delta Pi
1- Alpha Epsilon Pi

1 Delta Delta Delta
1 Alpha Chi Omega
3 Alpha Kappa Alphas
1 Kappa Alpha Psi

I have a very small program and I'm new to it still but in my classes I've met

1 Chi Omega and
1 Pi Beta Phi

I'm sure there are more, but many of them are further out of college than I am and don't wear T-shirts and jeans to class anymore!

Same here, it's rarely been discussed. I know a couple of friends who were in fraternities, although the names escape me; one girl I know of is a sorority member, but other than that I haven't heard anyone talk about it.

I've had several Greeks in my MA program, but most are from local chapters (I'm in grad school where there are only locals) and I don't recall which ones they all belong to. The ones I do remember:

1) 1 Gamma Phi Beta (me!)
2) 1 Chi Sigma Chi (local)
3) 1 Alpha Phi from another undergrad
4) 1 Lambda Theta Nu (disaffiliated)

What's funny is that I occasionally have a bag with my sorority letters on it and I get looked at funny by the Greek students on campus. They know that there are no orgs on campus other than the locals there, so occasionally a former colleague (who used to work with Greeks there) would tell me that he was approached by some students about some sorority woman who was crashing campus. Lol

In my med school class of 120ish

4 Betas (me, one of my pledg bros, and our pledge ed along with another guy from a different chapter)
2 Lambda Chis
3 SigEps
1 DU
1 ADPhi
1 ATO
2 Theta Chis
1 (maybe 2) Phi Taus
2 (used to be 3) Pikes
1 FarmHouse
1 PhiPsi

2 Thetas
1 Gamma Phi
2 Tri-delts
1 AZD
1 DG
2 DZ's

So 28 or 29...not a bad percentage. Get down to our offical class size and we're over 25%