diff --git a/.gitignore b/.gitignore
index 0ac425a1f..f82bacbbd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,4 +16,9 @@ geckodriver.log
 /numpy/build
 /numpy/host
 /numpy/downloads
-/numpy/.patched
\ No newline at end of file
+/numpy/.patched
+
+/pandas/build
+/pandas/host
+/pandas/downloads
+/pandas/.patched
\ No newline at end of file
diff --git a/Makefile b/Makefile
index a86eb6f9b..729792b87 100644
--- a/Makefile
+++ b/Makefile
@@ -34,6 +34,10 @@ NUMPY_LIBS=\
 	$(NUMPY_ROOT)/random/mtrand.so \
 	$(NUMPY_ROOT)/fft/fftpack_lite.so
 
+PANDAS_ROOT=pandas/build/pandas
+PANDAS_LIBS=\
+	$(PANDAS_ROOT)/_libs/lib.so
+
 SITEPACKAGES=root/lib/python$(PYMINOR)/site-packages
 
 all: build/pyodide.asm.html build/pyodide.js build/pyodide_dev.js
@@ -85,6 +89,7 @@ clean:
 root/.built: \
 		$(CPYTHONLIB) \
 		$(NUMPY_LIBS) \
+		$(PANDAS_LIBS) \
 		src/lazy_import.py \
 		src/sitecustomize.py \
 		src/webbrowser.py \
@@ -93,6 +98,7 @@ root/.built: \
 	mkdir -p root/lib
 	cp -a $(CPYTHONLIB)/ root/lib
 	cp -a numpy/build/numpy $(SITEPACKAGES)
+	cp -a pandas/build/pandas $(SITEPACKAGES)
 	rm -fr $(SITEPACKAGES)/numpy/distutils
 	cp src/lazy_import.py $(SITEPACKAGES)
 	cp src/sitecustomize.py $(SITEPACKAGES)
@@ -117,6 +123,8 @@ $(CPYTHONLIB): emsdk/emsdk/emsdk
 $(NUMPY_LIBS): $(CPYTHONLIB)
 	make -C numpy
 
+$(PANDAS_LIBS): $(NUMPY_LIBS)
+	make -C pandas
 
 emsdk/emsdk/emsdk:
 	make -C emsdk
diff --git a/pandas/Makefile b/pandas/Makefile
new file mode 100644
index 000000000..6796a54ec
--- /dev/null
+++ b/pandas/Makefile
@@ -0,0 +1,269 @@
+PYODIDE_ROOT=$(abspath ..)
+include ../Makefile.envs
+
+PYVERSION=3.6.4
+PYMINOR=$(basename $(PYVERSION))
+
+PDVERSION=0.22.0
+NPYVERSION=1.14.1
+
+ROOT=$(abspath .)
+
+HOSTPYTHONINSTALL=$(ROOT)/../cpython/build/$(PYVERSION)/host
+HOSTPYTHON=$(HOSTPYTHONINSTALL)/bin/python3$(EXE)
+PYTHONINCLUDE=$(ROOT)/../cpython/installs/python-$(PYVERSION)/include/python$(PYMINOR)
+
+HOSTROOT=$(ROOT)/host
+HOSTDIR=$(HOSTROOT)/pandas-$(PDVERSION)
+HOSTBUILD=$(HOSTDIR)/build
+
+BUILD=$(ROOT)/build/pandas
+
+TARBALL=$(ROOT)/downloads/pandas-$(PDVERSION).tar.gz
+URL=https://pypi.python.org/packages/08/01/803834bc8a4e708aedebb133095a88a4dad9f45bbaf5ad777d2bea543c7e/pandas-0.22.0.tar.gz
+
+PLATFORMSLUG=$(shell $(HOSTPYTHON) -c "import sysconfig; print(sysconfig.get_platform())")-$(PYMINOR)
+
+CC=emcc
+CXX=em++
+AR=emar
+CFLAGS=-Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -I$(HOSTDIR)/pandas/_libs/src/klib -I$(HOSTDIR)/pandas/_libs/src -I../numpy/host/numpy-$(NPYVERSION)/numpy/core/include -I../numpy/config -I../numpy/host/numpy-$(NPYVERSION)/build/src.$(PLATFORMSLUG)/numpy/core/include/numpy -I$(PYTHONINCLUDE) -I$(HOSTDIR)/pandas/_libs/src/ujson/lib -I$(HOSTDIR)/pandas/_libs/src/datetime -Wno-unused-function
+LDFLAGS=\
+	-O3 \
+	-Werror \
+  -s EMULATED_FUNCTION_POINTERS=1 \
+  -s EMULATE_FUNCTION_POINTER_CASTS=1 \
+  -s SIDE_MODULE=1 \
+	-s WASM=1 \
+  --memory-init-file 0
+
+
+all: \
+	$(BUILD)/__init__.py \
+	$(BUILD)/_libs/algos.so \
+	$(BUILD)/_libs/groupby.so \
+	$(BUILD)/_libs/hashtable.so \
+	$(BUILD)/_libs/index.so \
+	$(BUILD)/_libs/interval.so \
+	$(BUILD)/_libs/join.so \
+	$(BUILD)/_libs/json.so \
+	$(BUILD)/_libs/lib.so \
+	$(BUILD)/_libs/parsers.so \
+	$(BUILD)/_libs/period.so \
+	$(BUILD)/_libs/properties.so \
+	$(BUILD)/_libs/sparse.so \
+	$(BUILD)/_libs/tslib.so \
+	$(BUILD)/_libs/tslibs/fields.so \
+	$(BUILD)/_libs/tslibs/frequencies.so \
+	$(BUILD)/_libs/tslibs/strptime.so \
+	$(BUILD)/_libs/tslibs/timedeltas.so \
+	$(BUILD)/_libs/tslibs/timezones.so \
+	$(BUILD)/_libs/window.so \
+	$(BUILD)/io/msgpack/_packer.so \
+	$(BUILD)/io/msgpack/_unpacker.so \
+	$(BUILD)/io/sas/_sas.so \
+	$(BUILD)/util/_move.so
+
+
+clean:
+	rm -fr $(HOSTROOT)
+	rm -fr $(BUILD)
+
+
+$(TARBALL):
+	[ -d $(ROOT)/downloads ] || mkdir $(ROOT)/downloads
+	wget -q -O $@ $(URL)
+	md5sum --quiet --check checksums || (rm $@; false)
+
+
+$(HOSTDIR)/setup.py: $(TARBALL)
+	[ -d $(HOSTROOT) ] || mkdir $(HOSTROOT)
+	tar -xf $(TARBALL) -C $(HOSTROOT)
+	touch $(HOSTDIR)/setup.py
+
+
+$(HOSTBUILD)/lib.$(PLATFORMSLUG)/pandas/__init__.py: $(ROOT)/.patched
+	( \
+	  cd $(HOSTDIR); \
+    $(HOSTPYTHON) setup.py build \
+	)
+
+
+$(BUILD)/__init__.py: $(HOSTBUILD)/lib.$(PLATFORMSLUG)/pandas/__init__.py
+	[ -d $(ROOT)/build ] || mkdir $(ROOT)/build
+	cp -r $(HOSTBUILD)/lib.$(PLATFORMSLUG)/pandas $(ROOT)/build && \
+	cd $(BUILD); find . -name "*.so" -type f -delete
+
+
+$(ROOT)/.patched: $(HOSTDIR)/setup.py
+	cat patches/*.patch | (cd $(HOSTDIR) ; patch -p1)
+	touch $@
+
+
+$(BUILD)/_libs/lib.so: $(HOSTDIR)/pandas/_libs/lib.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/properties.so: $(HOSTDIR)/pandas/_libs/properties.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/hashtable.so: $(HOSTDIR)/pandas/_libs/hashtable.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/tslibs/strptime.so: \
+		$(HOSTDIR)/pandas/_libs/tslibs/strptime.bc \
+		$(HOSTDIR)/pandas/_libs/src/datetime/np_datetime.bc \
+		$(HOSTDIR)/pandas/_libs/src/datetime/np_datetime_strings.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/tslib.so: \
+		$(HOSTDIR)/pandas/_libs/tslib.bc \
+		$(HOSTDIR)/pandas/_libs/src/datetime/np_datetime.bc \
+		$(HOSTDIR)/pandas/_libs/src/datetime/np_datetime_strings.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/tslibs/timedeltas.so: \
+		$(HOSTDIR)/pandas/_libs/tslibs/timedeltas.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/tslibs/timezones.so: \
+		$(HOSTDIR)/pandas/_libs/tslibs/timezones.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/tslibs/fields.so: \
+		$(HOSTDIR)/pandas/_libs/tslibs/fields.bc \
+		$(HOSTDIR)/pandas/_libs/src/datetime/np_datetime.bc \
+		$(HOSTDIR)/pandas/_libs/src/datetime/np_datetime_strings.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/period.so: \
+		$(HOSTDIR)/pandas/_libs/period.bc \
+		$(HOSTDIR)/pandas/_libs/src/datetime/np_datetime.bc \
+		$(HOSTDIR)/pandas/_libs/src/datetime/np_datetime_strings.bc \
+		$(HOSTDIR)/pandas/_libs/src/period_helper.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/tslibs/frequencies.so: \
+		$(HOSTDIR)/pandas/_libs/tslibs/frequencies.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/index.so: \
+		$(HOSTDIR)/pandas/_libs/index.bc \
+		$(HOSTDIR)/pandas/_libs/src/datetime/np_datetime.bc \
+		$(HOSTDIR)/pandas/_libs/src/datetime/np_datetime_strings.bc \
+		$(HOSTDIR)/pandas/_libs/src/period_helper.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/algos.so: \
+		$(HOSTDIR)/pandas/_libs/algos.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/groupby.so: \
+		$(HOSTDIR)/pandas/_libs/groupby.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/join.so: \
+		$(HOSTDIR)/pandas/_libs/join.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/interval.so: \
+		$(HOSTDIR)/pandas/_libs/interval.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/window.so: \
+		$(HOSTDIR)/pandas/_libs/window.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/parsers.so: \
+		$(HOSTDIR)/pandas/_libs/parsers.bc \
+		$(HOSTDIR)/pandas/_libs/src/parser/tokenizer.bc \
+		$(HOSTDIR)/pandas/_libs/src/parser/io.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/sparse.so: \
+		$(HOSTDIR)/pandas/_libs/sparse.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/hashing.so: \
+		$(HOSTDIR)/pandas/_libs/hashing.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/io/sas/_sas.so: \
+		$(HOSTDIR)/pandas/io/sas/sas.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/io/msgpack/_packer.so: \
+		$(HOSTDIR)/pandas/io/msgpack/_packer.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/io/msgpack/_unpacker.so: \
+		$(HOSTDIR)/pandas/io/msgpack/_unpacker.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/_libs/json.so: \
+		$(HOSTDIR)/pandas/_libs/src/ujson/python/ujson.bc \
+		$(HOSTDIR)/pandas/_libs/src/ujson/python/objToJSON.bc \
+		$(HOSTDIR)/pandas/_libs/src/ujson/python/JSONtoObj.bc \
+		$(HOSTDIR)/pandas/_libs/src/ujson/lib/ultrajsonenc.bc \
+		$(HOSTDIR)/pandas/_libs/src/ujson/lib/ultrajsondec.bc \
+		$(HOSTDIR)/pandas/_libs/src/datetime/np_datetime.bc \
+		$(HOSTDIR)/pandas/_libs/src/datetime/np_datetime_strings.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+$(BUILD)/util/_move.so: \
+		$(HOSTDIR)/pandas/util/move.bc
+	$(CC) $(LDFLAGS) $^ -o tmp.wasm
+	mv tmp.wasm $@
+
+
+%.bc: %.c $(BUILD)/__init__.py
+	$(CC) $(CFLAGS) -include src/state.h -c $< -o $@
+
+
+%.bc: %.cpp $(BUILD)/__init__.py
+	$(CXX) $(CFLAGS) -include src/state.h -c $< -o $@
diff --git a/pandas/checksums b/pandas/checksums
new file mode 100644
index 000000000..617a14ec3
--- /dev/null
+++ b/pandas/checksums
@@ -0,0 +1 @@
+c7a2757b607748255f3270221ac61d59 ./downloads/pandas-0.22.0.tar.gz
\ No newline at end of file
diff --git a/pandas/src/state.h b/pandas/src/state.h
new file mode 100644
index 000000000..6f11baeb2
--- /dev/null
+++ b/pandas/src/state.h
@@ -0,0 +1,5 @@
+#include "Python.h"
+
+inline PyGILState_STATE PyGILState_Ensure(void) { return PyGILState_UNLOCKED; }
+
+inline void PyGILState_Release(PyGILState_STATE state) { }
diff --git a/test/test_pandas.py b/test/test_pandas.py
new file mode 100644
index 000000000..fca51898a
--- /dev/null
+++ b/test/test_pandas.py
@@ -0,0 +1,2 @@
+def test_pandas(selenium):
+    selenium.run("import pandas")