diff --git a/pkgs/development/python-modules/pymc3/default.nix b/pkgs/development/python-modules/pymc3/default.nix
new file mode 100644
index 00000000000..308958abb6d
--- /dev/null
+++ b/pkgs/development/python-modules/pymc3/default.nix
@@ -0,0 +1,64 @@
+{ lib
+, fetchPypi
+, buildPythonPackage
+, pythonOlder
+, Theano
+, pandas
+, patsy
+, joblib
+, tqdm
+, six
+, h5py
+, pytest
+, nose
+, parameterized
+, matplotlib
+}:
+
+buildPythonPackage rec {
+  pname = "pymc3";
+  version = "3.2";
+  disabled = pythonOlder "3.5";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0hpzhkpv7sbwkcva7x914yvzcf1d1a952ynbcx6mvlgv5lqghc39";
+  };
+
+  # No need for coverage stats in Nix builds
+  postPatch = ''
+    substituteInPlace setup.py --replace ", 'pytest-cov'" ""
+  '';
+
+  propagatedBuildInputs = [
+    Theano
+    pandas
+    patsy
+    joblib
+    tqdm
+    six
+    h5py
+  ];
+
+  checkInputs = [
+    pytest
+    nose
+    parameterized
+  ];
+
+  # The test suite is computationally intensive and test failures are not
+  # indicative for package usability hence tests are disabled by default.
+  doCheck = false;
+
+  # For some reason tests are run as a part of the *install* phase if enabled.
+  # Theano writes compiled code to ~/.theano hence we set $HOME.
+  preInstall = "export HOME=$(mktemp -d)";
+  postInstall = "rm -rf $HOME";
+
+  meta = {
+    description = "Bayesian estimation, particularly using Markov chain Monte Carlo (MCMC)";
+    homepage = http://github.com/pymc-devs/pymc3;
+    license = lib.licenses.asl20;
+    maintainers = with lib.maintainers; [ ilya-kolpakov ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 50589b6938d..93444be7302 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -8244,6 +8244,8 @@ in {
 
   pygraphviz = callPackage ../development/python-modules/pygraphviz { };
 
+  pymc3 = callPackage ../development/python-modules/pymc3 { };
+
   pympler = buildPythonPackage rec {
     pname = "Pympler";
     version = "0.4.3";