diff --git a/README.md b/README.md
index 264d02c..ad86d29 100644
--- a/README.md
+++ b/README.md
@@ -137,6 +137,7 @@ Click on the desired API to see usage and more information
 * [Recipient Lists](/docs/resources/recipientLists.md) - `client.recipientLists` ([examples](/examples/recipientLists))
 * [Relay Webhooks](/docs/resources/relayWebhooks.md) - `client.relayWebhooks` ([examples](/examples/relayWebhooks))
 * [Sending Domains](/docs/resources/sendingDomains.md) - `client.sendingDomains` ([examples](/examples/sendingDomains))
+* [Subaccounts](/docs/resources/subaccounts.md) - `client.subaccounts` ([examples](/examples/subaccounts))
 * [Suppression List](/docs/resources/suppressionList.md) - `client.suppressionList` ([examples](/examples/suppressionList))
 * [Templates](/docs/resources/templates.md) - `client.templates` ([examples](/examples/templates))
 * [Transmissions](/docs/resources/transmissions.md) - `client.transmissions` ([examples](/examples/transmissions))
diff --git a/docs/resources/subaccounts.md b/docs/resources/subaccounts.md
new file mode 100644
index 0000000..d948692
--- /dev/null
+++ b/docs/resources/subaccounts.md
@@ -0,0 +1,46 @@
+# Subaccounts
+
+This library provides easy access to the [Subaccounts](https://www.sparkpost.com/api#/reference/subaccounts) Resource.
+
+## Methods
+* **all(callback)**
+  List a summary of all subaccounts.
+  * `callback` - executed after task is completed. **required**
+    * standard `callback(err, data)`
+    * `err` - any error that occurred
+    * `data` - full response from request client
+* **find(subaccountId, callback)**
+  Retrieve details about a specified subaccount by its id
+  * `subaccountId` - the id of the subaccount you want to look up **required**
+  * `callback` - see all function
+* **create(options, callback)**
+  Create a new subaccount
+  * `options.name` - user-friendly name **required**
+  * `options.keyLabel` - user-friendly identifier for subaccount API key **required**
+  * `options.keyGrants` - list of grants to give the subaccount API key **required**
+  * `options.keyValidIps` - list of IPs the subaccount may be used from
+  * `options.ipPool` - id of the default IP pool assigned to subaccount's transmissions
+  * `callback` - see all function
+* **update(options, callback)**
+  Updates an existing subaccount
+  * `options.subaccountId` - the id of the subaccount you want to update **required**
+  * `options.name` - user-friendly name
+  * `options.status` - status of the subaccount
+  * `options.ipPool` - id of the default IP pool assigned to subaccount's transmissions
+  * `callback` - see all function
+
+## Examples
+
+```js
+var SparkPost = require('sparkpost');
+var client = new SparkPost('YOUR_API_KEY');
+
+client.subaccounts.all(function(err, data) {
+  if(err) {
+    console.log(err);
+    return;
+  }
+
+  console.log(data.body);
+});
+```
diff --git a/lib/subaccounts.js b/lib/subaccounts.js
new file mode 100644
index 0000000..888a2a6
--- /dev/null
+++ b/lib/subaccounts.js
@@ -0,0 +1,108 @@
+'use strict';
+
+var api = 'subaccounts';
+
+var toApiFormat = function(input) {
+  var model = {};
+
+  model.name = input.name;
+  model.key_label = input.keyLabel;
+  model.ip_pool = input.ipPool;
+  model.status = input.status;
+
+  model.key_grants = Array.isArray(input.keyGrants) ? input.keyGrants : [input.keyGrants];
+  model.key_valid_ips = Array.isArray(input.keyValidIps) ? input.keyValidIps : [input.keyValidIps];
+
+  return model;
+};
+
+var validateCreateOptions = function(input) {
+  if (!input.name) {
+    return 'name is required';
+  }
+
+  if (!input.keyLabel) {
+    return 'keyLabel is required';
+  }
+
+  if (!input.keyGrants) {
+    return 'keyGrants is required';
+  }
+
+  return null;
+};
+
+module.exports = function(client) {
+  var subaccounts = {
+    all: function(callback) {
+      var options = {
+        uri: api
+      };
+      client.get(options, callback);
+    },
+    find: function(subaccountId, callback) {
+      if(typeof subaccountId === 'function') {
+        callback = subaccountId;
+        subaccountId = null;
+      }
+
+      if (!subaccountId) {
+        callback(new Error('subaccountId is required'));
+        return;
+      }
+
+      var options = {
+        uri: api + '/' + subaccountId
+      };
+      client.get(options, callback);
+    },
+    create: function(options, callback) {
+      if(typeof options === 'function') {
+        callback = options;
+        options = null;
+      }
+
+      if (!options) {
+        callback(new Error('options are required'));
+        return;
+      }
+
+      var validation = validateCreateOptions(options);
+      if (validation) {
+        callback(new Error(validation + ' in options'));
+        return;
+      }
+
+      var reqOpts = {
+        uri: api,
+        json: toApiFormat(options)
+      };
+      client.post(reqOpts, callback);
+    },
+    update: function(options, callback) {
+      if(typeof options === 'function') {
+        callback = options;
+        options = null;
+      }
+
+      if(!options) {
+        callback(new Error('options are required'));
+        return;
+      }
+
+      if(!options.subaccountId) {
+        callback(new Error('subaccountId is required in options'));
+        return;
+      }
+
+      var subaccountId = options.subaccountId;
+      var reqOpts = {
+        uri: api + '/' + subaccountId,
+        json: toApiFormat(options)
+      };
+      client.put(reqOpts, callback);
+    }
+  };
+
+  return subaccounts;
+};
diff --git a/test/spec/subaccounts.spec.js b/test/spec/subaccounts.spec.js
new file mode 100644
index 0000000..a69f804
--- /dev/null
+++ b/test/spec/subaccounts.spec.js
@@ -0,0 +1,165 @@
+var chai = require('chai')
+  , expect = chai.expect
+  , sinon = require('sinon')
+  , sinonChai = require('sinon-chai');
+
+chai.use(sinonChai);
+
+describe('Subaccounts Library', function () {
+  var client, subaccounts;
+
+  beforeEach(function() {
+    client = {
+      get: sinon.stub().yields(),
+      post: sinon.stub().yields(),
+      put: sinon.stub().yields()
+    };
+
+    subaccounts = require('../../lib/subaccounts')(client);
+  });
+
+  describe('all Method', function() {
+    it('should call client get method with the appropriate uri', function(done) {
+      subaccounts.all(function(err, data) {
+        expect(client.get.firstCall.args[0].uri).to.equal('subaccounts');
+        done();
+      });
+    });
+  });
+
+  describe('find Method', function() {
+    it('should call client get method with the appropriate uri', function(done) {
+      var subaccountId = 'test';
+
+      subaccounts.find(subaccountId, function(err, data) {
+        expect(client.get.firstCall.args[0].uri).to.equal('subaccounts/test');
+        done();
+      });
+    });
+
+    it('should throw an error if subaccountId is null', function(done) {
+      subaccounts.find(null, function(err) {
+        expect(err.message).to.equal('subaccountId is required');
+        expect(client.get).not.to.have.been.called;
+        done();
+      });
+    });
+
+    it('should throw an error if subaccountId is missing', function(done) {
+      subaccounts.find(function(err) {
+        expect(err.message).to.equal('subaccountId is required');
+        expect(client.get).not.to.have.been.called;
+        done();
+      });
+    });
+  });
+
+  describe('create Method', function() {
+    it('should call client post method with the appropriate uri', function(done) {
+      var options = {
+        name: 'test',
+        keyLabel: 'test',
+        keyGrants: []
+      };
+
+      subaccounts.create(options, function(err, data) {
+        expect(client.post.firstCall.args[0].uri).to.equal('subaccounts');
+        done();
+      });
+    });
+
+    it('should throw an error if options is null', function(done) {
+      subaccounts.create(null, function(err) {
+        expect(err.message).to.equal('options are required');
+        expect(client.post).not.to.have.been.called;
+        done();
+      });
+    });
+
+    it('should throw an error if options is missing', function(done) {
+      subaccounts.create(function(err) {
+        expect(err.message).to.equal('options are required');
+        expect(client.post).not.to.have.been.called;
+        done();
+      });
+    });
+
+    it('should throw an error if name is missing from options', function(done) {
+      var options = {
+        keyLabel: 'test',
+        keyGrants: []
+      };
+
+      subaccounts.create(options, function(err) {
+        expect(err.message).to.equal('name is required in options');
+        expect(client.post).not.to.have.been.called;
+        done();
+      });
+    });
+
+    it('should throw an error if keyLabel is missing from options', function(done) {
+      var options = {
+        name: 'test',
+        keyGrants: []
+      };
+
+      subaccounts.create(options, function(err) {
+        expect(err.message).to.equal('keyLabel is required in options');
+        expect(client.post).not.to.have.been.called;
+        done();
+      });
+    });
+
+    it('should throw an error if keyGrants is missing from options', function(done) {
+      var options = {
+        name: 'test',
+        keyLabel: 'test'
+      };
+
+      subaccounts.create(options, function(err) {
+        expect(err.message).to.equal('keyGrants is required in options');
+        expect(client.post).not.to.have.been.called;
+        done();
+      });
+    });
+  });
+
+  describe('update Method', function() {
+    it('should call client put method with the appropriate uri', function(done) {
+      var options = {
+        subaccountId: 'test'
+      };
+
+      subaccounts.update(options, function(err, data) {
+        expect(client.put.firstCall.args[0].uri).to.equal('subaccounts/test');
+        done();
+      });
+    });
+
+    it('should throw an error if options is null', function(done) {
+      subaccounts.update(null, function(err) {
+        expect(err.message).to.equal('options are required');
+        expect(client.put).not.to.have.been.called;
+        done();
+      });
+    });
+
+    it('should throw an error if options is missing', function(done) {
+      subaccounts.update(function(err) {
+        expect(err.message).to.equal('options are required');
+        expect(client.put).not.to.have.been.called;
+        done();
+      });
+    });
+
+    it('should throw an error if subaccountId is missing from options', function(done) {
+      var options = {};
+
+      subaccounts.update(options, function(err, data) {
+        expect(err.message).to.equal('subaccountId is required in options');
+        expect(client.put).not.to.have.been.called;
+        done();
+      });
+    });
+  });
+});