diff --git a/bigquery/job.go b/bigquery/job.go
index e6be579c07a1..0ce79c111689 100644
--- a/bigquery/job.go
+++ b/bigquery/job.go
@@ -56,7 +56,7 @@ func (c *Client) JobFromIDLocation(ctx context.Context, id, location string) (j
 	return c.JobFromProject(ctx, c.projectID, id, location)
 }
 
-// JobFromProject creates a Job which refers to an existing BigQuery job.  The job
+// JobFromProject creates a Job which refers to an existing BigQuery job. The job
 // need not have been created by this package, nor does it need to reside within the same
 // project or location as the instantiated client.
 func (c *Client) JobFromProject(ctx context.Context, projectID, jobID, location string) (j *Job, err error) {
@@ -170,17 +170,22 @@ type JobIDConfig struct {
 
 	// Location is the location for the job.
 	Location string
+
+	// ProjectID is the Google Cloud project associated with the job.
+	ProjectID string
 }
 
 // createJobRef creates a JobReference.
 func (j *JobIDConfig) createJobRef(c *Client) *bq.JobReference {
-	// We don't check whether projectID is empty; the server will return an
-	// error when it encounters the resulting JobReference.
+	projectID := j.ProjectID
+	if projectID == "" { // Use Client.ProjectID as a default.
+		projectID = c.projectID
+	}
 	loc := j.Location
 	if loc == "" { // Use Client.Location as a default.
 		loc = c.Location
 	}
-	jr := &bq.JobReference{ProjectId: c.projectID, Location: loc}
+	jr := &bq.JobReference{ProjectId: projectID, Location: loc}
 	if j.JobID == "" {
 		jr.JobId = randomIDFn()
 	} else if j.AddJobIDSuffix {
diff --git a/bigquery/job_test.go b/bigquery/job_test.go
index fbde305a85a1..c4e28abfb129 100644
--- a/bigquery/job_test.go
+++ b/bigquery/job_test.go
@@ -60,13 +60,19 @@ func TestCreateJobRef(t *testing.T) {
 			client: cLoc,
 			want:   &bq.JobReference{JobId: "foo", Location: "loc"},
 		},
+		{
+			in:   JobIDConfig{JobID: "foo", ProjectID: "anotherProj"},
+			want: &bq.JobReference{JobId: "foo", ProjectId: "anotherProj"},
+		},
 	} {
 		client := test.client
 		if client == nil {
 			client = cNoLoc
 		}
 		got := test.in.createJobRef(client)
-		test.want.ProjectId = "projectID"
+		if test.want.ProjectId == "" {
+			test.want.ProjectId = "projectID"
+		}
 		if !testutil.Equal(got, test.want) {
 			t.Errorf("%+v: got %+v, want %+v", test.in, got, test.want)
 		}
diff --git a/bigquery/query_test.go b/bigquery/query_test.go
index 39d121b8f253..7a3e22f5feb1 100644
--- a/bigquery/query_test.go
+++ b/bigquery/query_test.go
@@ -94,6 +94,19 @@ func TestQuery(t *testing.T) {
 				return j
 			}(),
 		},
+		{
+			dst:         c.DatasetInProject("another-project", "dataset-id").Table("table-id"),
+			jobIDConfig: JobIDConfig{JobID: "jobID", ProjectID: "another-project"},
+			src:         &QueryConfig{Q: "query string"},
+			want: func() *bq.Job {
+				j := defaultQueryJob()
+				j.Configuration.Query.DefaultDataset = nil
+				j.Configuration.Query.DestinationTable.ProjectId = "another-project"
+				j.JobReference.JobId = "jobID"
+				j.JobReference.ProjectId = "another-project"
+				return j
+			}(),
+		},
 		{
 			dst: &Table{},
 			src: defaultQuery,
@@ -415,10 +428,9 @@ func TestProbeFastPath(t *testing.T) {
 	}
 	pfalse := false
 	testCases := []struct {
-		inCfg    QueryConfig
-		inJobCfg JobIDConfig
-		wantReq  *bq.QueryRequest
-		wantErr  bool
+		inCfg   QueryConfig
+		wantReq *bq.QueryRequest
+		wantErr bool
 	}{
 		{
 			inCfg: QueryConfig{
@@ -490,7 +502,10 @@ func TestProbeFastPath(t *testing.T) {
 		},
 	}
 	for i, tc := range testCases {
-		in := &Query{tc.inJobCfg, tc.inCfg, c}
+		in := &Query{
+			QueryConfig: tc.inCfg,
+			client:      c,
+		}
 		gotReq, err := in.probeFastPath()
 		if tc.wantErr && err == nil {
 			t.Errorf("case %d wanted error, got nil", i)