Lambdas may refer to:
- Lambda Alpha Upsilon, a nationally selective Latino-interest fraternity based in the United States
- Lambda Theta Phi, a nationally recognized Latin-interest fraternity based in the United States
- Lambda Upsilon Lambda, a nationally recognized Latino-interest fraternity based in the United States
- Lambda Phi Epsilon, a nationally recognized Asian-interest fraternity based in the United States
- Lambda Theta Nu, a nationally recognized Latina based sorority in the United States