diff --git a/accounts.go b/accounts.go
index 8caf07e..c8baaaf 100644
--- a/accounts.go
+++ b/accounts.go
@@ -453,6 +453,25 @@ func (s *AccountsService) GetSSHKey(ctx context.Context, accountID, sshKeyID str
 	return v, resp, err
 }
 
+// AddSSHKey adds an SSH key to a user's account.
+// Gerrit API docs: https://gerrit-review.googlesource.com/Documentation/rest-api-accounts.html#add-ssh-key
+func (s *AccountsService) AddSSHKey(ctx context.Context, accountID string, sshKey string) (*SSHKeyInfo, *Response, error) {
+	u := fmt.Sprintf("accounts/%s/sshkeys", accountID)
+
+	req, err := s.client.NewRawPostRequest(ctx, u, sshKey)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var keyInfo SSHKeyInfo
+	resp, err := s.client.Do(req, &keyInfo)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return &keyInfo, resp, err
+}
+
 // ListGPGKeys returns the GPG keys of an account.
 //
 // Gerrit API docs: https://gerrit-review.googlesource.com/Documentation/rest-api-accounts.html#list-gpg-keys
@@ -957,6 +976,5 @@ func (s *AccountsService) UnstarChange(ctx context.Context, accountID, changeID
 
 /*
 Missing Account Endpoints:
-	Add SSH Key
 	Get Avatar
 */
diff --git a/accounts_test.go b/accounts_test.go
new file mode 100644
index 0000000..2e5acaa
--- /dev/null
+++ b/accounts_test.go
@@ -0,0 +1,71 @@
+package gerrit_test
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+	"testing"
+)
+
+// TestAddSSHKey tests the addition of an SSH key to an account.
+func TestAddSSHKey(t *testing.T) {
+	setup()
+	defer teardown()
+
+	testMux.HandleFunc("/accounts/self/sshkeys", func(w http.ResponseWriter, r *http.Request) {
+		// Ensure the request method is POST
+		if r.Method != http.MethodPost {
+			t.Errorf("Expected POST request, got %s", r.Method)
+		}
+
+		// Ensure Content-Type is text/plain
+		if r.Header.Get("Content-Type") != "text/plain" {
+			t.Errorf("Expected Content-Type 'text/plain', got %s", r.Header.Get("Content-Type"))
+		}
+
+		// Read body and validate SSH key
+		expectedSSHKey := "ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA0T...YImydZAw== john.doe@example.com"
+		body, _ := io.ReadAll(r.Body)
+		receivedSSHKey := strings.TrimSpace(string(body))
+
+		if receivedSSHKey != expectedSSHKey {
+			t.Errorf("Expected SSH key '%s', but received '%s'", expectedSSHKey, receivedSSHKey)
+		}
+
+		// Mock successful JSON response
+		w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+		w.WriteHeader(http.StatusOK)
+		fmt.Fprint(w, `{
+			"seq": 2,
+			"ssh_public_key": "ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA0T...YImydZAw== john.doe@example.com",
+			"encoded_key": "AAAAB3NzaC1yc2EAAAABIwAAAQEA0T...YImydZAw==",
+			"algorithm": "ssh-rsa",
+			"comment": "john.doe@example.com",
+			"valid": true
+		}`)
+	})
+
+	ctx := context.Background()
+	sshKey := "ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA0T...YImydZAw== john.doe@example.com"
+
+	// Use testClient.Accounts instead of undefined Accounts variable
+	keyInfo, _, err := testClient.Accounts.AddSSHKey(ctx, "self", sshKey)
+	if err != nil {
+		t.Fatalf("AddSSHKey returned error: %v", err)
+	}
+
+	// Verify SSH key information in the response
+	if keyInfo.SSHPublicKey != sshKey {
+		t.Errorf("Expected SSH key '%s', got '%s'", sshKey, keyInfo.SSHPublicKey)
+	}
+
+	if keyInfo.Valid != true {
+		t.Errorf("Expected key validity to be true, got false")
+	}
+
+	if keyInfo.Comment != "john.doe@example.com" {
+		t.Errorf("Expected comment 'john.doe@example.com', got '%s'", keyInfo.Comment)
+	}
+}
diff --git a/gerrit.go b/gerrit.go
index 5dfa904..a757b3a 100644
--- a/gerrit.go
+++ b/gerrit.go
@@ -289,6 +289,34 @@ func (c *Client) NewRawPutRequest(ctx context.Context, urlStr string, body strin
 	return req, nil
 }
 
+// NewRawPostRequest creates a raw POST request and makes no attempt to encode
+// or marshal the body. Just passes it straight through.
+func (c *Client) NewRawPostRequest(ctx context.Context, urlStr string, body string) (*http.Request, error) {
+	// Build URL for request
+	u, err := c.buildURLForRequest(urlStr)
+	if err != nil {
+		return nil, err
+	}
+
+	buf := bytes.NewBuffer([]byte(body))
+	req, err := http.NewRequestWithContext(ctx, "POST", u, buf)
+	if err != nil {
+		return nil, err
+	}
+
+	// Apply Authentication
+	if err := c.addAuthentication(ctx, req); err != nil {
+		return nil, err
+	}
+
+	// Request compact JSON
+	// See https://gerrit-review.googlesource.com/Documentation/rest-api.html#output
+	req.Header.Add("Accept", "application/json")
+	req.Header.Add("Content-Type", "text/plain")
+
+	return req, nil
+}
+
 // Call is a combine function for Client.NewRequest and Client.Do.
 //
 // Most API methods are quite the same.
diff --git a/gerrit_test.go b/gerrit_test.go
index d80cb34..3c73483 100644
--- a/gerrit_test.go
+++ b/gerrit_test.go
@@ -437,6 +437,38 @@ func TestNewRawPutRequest(t *testing.T) {
 	}
 }
 
+func TestNewRawPostRequest(t *testing.T) {
+	ctx := context.Background()
+	c, err := gerrit.NewClient(ctx, testGerritInstanceURL, nil)
+	if err != nil {
+		t.Errorf("An error occured. Expected nil. Got %+v.", err)
+	}
+
+	inURL, outURL := "/foo", testGerritInstanceURL+"foo"
+	req, _ := c.NewRawPostRequest(ctx, inURL, "test raw POST contents")
+
+	// Test that relative URL was expanded
+	if got, want := req.URL.String(), outURL; got != want {
+		t.Errorf("NewRequest(%q) URL is %v, want %v", inURL, got, want)
+	}
+
+	// Test that HTTP method is POST
+	if got, want := req.Method, http.MethodPost; got != want {
+		t.Errorf("NewRawPostRequest method is %v, want %v", got, want)
+	}
+
+	// Test that request body is passed correctly
+	body, _ := io.ReadAll(req.Body)
+	if got, want := string(body), "test raw POST contents"; got != want {
+		t.Errorf("NewRequest Body is %v, want %v", got, want)
+	}
+
+	// Test that Content-Type is set correctly
+	if got, want := req.Header.Get("Content-Type"), "text/plain"; got != want {
+		t.Errorf("NewRawPostRequest Content-Type is %v, want %v", got, want)
+	}
+}
+
 func testURLParseError(t *testing.T, err error) {
 	if err == nil {
 		t.Errorf("Expected error to be returned")