diff --git a/internal/api/router.go b/internal/api/router.go
index 5eae5b8ac..f689bec03 100644
--- a/internal/api/router.go
+++ b/internal/api/router.go
@@ -165,6 +165,8 @@ func newGinRouter(ctx context.Context, client discovery.SvcDiscoveryRegistry, co
 		userRouterGroup.POST("/set_msg_receive_setting", u.SetMsgReceiveSetting)
 		// 根据手机号精确查找用户（phoneSearchVisibility=true 时遵守 phone_visibility 设置）
 		userRouterGroup.POST("/get_user_by_phone", u.GetUserByPhone)
+		// 根据昵称精确查询用户（可多结果，与 getPaginationUsers 模糊搜索不同）
+		userRouterGroup.POST("/get_users_by_nickname", u.GetUsersByNickname)
 
 		// 全局黑名单管理（仅管理员）
 		userRouterGroup.POST("/add_global_blacklist", bl.AddGlobalBlacklist)
diff --git a/internal/api/user.go b/internal/api/user.go
index 5bb154481..994575fa6 100644
--- a/internal/api/user.go
+++ b/internal/api/user.go
@@ -321,3 +321,7 @@ func (u *UserApi) SetMsgReceiveSetting(c *gin.Context) {
 func (u *UserApi) GetUserByPhone(c *gin.Context) {
 	a2r.Call(c, user.UserClient.GetUserByPhone, u.Client)
 }
+
+func (u *UserApi) GetUsersByNickname(c *gin.Context) {
+	a2r.Call(c, user.UserClient.GetUsersByNickname, u.Client)
+}
diff --git a/internal/rpc/user/user.go b/internal/rpc/user/user.go
index cf9f55528..66bd1d682 100644
--- a/internal/rpc/user/user.go
+++ b/internal/rpc/user/user.go
@@ -22,6 +22,7 @@ import (
 	"strings"
 	"sync"
 	"time"
+	"unicode/utf8"
 
 	"github.com/openimsdk/open-im-server/v3/internal/rpc/relation"
 	"github.com/openimsdk/open-im-server/v3/pkg/common/config"
@@ -451,6 +452,61 @@ func (s *userServer) GetUserByPhone(ctx context.Context, req *pbuser.GetUserByPh
 	return &pbuser.GetUserByPhoneResp{UserInfo: pbUser}, nil
 }
 
+// GetUsersByNickname 按昵称精确匹配查询普通用户（app_manger_level 与分页拉取用户一致）。
+// 全局黑名单用户会被过滤；手机号字段按 phone_visibility 与 getDesignateUsers 相同规则处理。
+func (s *userServer) GetUsersByNickname(ctx context.Context, req *pbuser.GetUsersByNicknameReq) (*pbuser.GetUsersByNicknameResp, error) {
+	nickname := strings.TrimSpace(req.Nickname)
+	if nickname == "" {
+		return nil, errs.ErrArgs.WrapMsg("nickname is required")
+	}
+	if n := utf8.RuneCountInString(nickname); n < 1 || n > 64 {
+		return nil, errs.ErrArgs.WrapMsg("nickname length must be 1-64 characters")
+	}
+
+	users, err := s.db.FindOrdinaryUsersByNickname(ctx, constant.IMOrdinaryUser, constant.AppOrdinaryUsers, nickname)
+	if err != nil {
+		log.ZError(ctx, "GetUsersByNickname: FindOrdinaryUsersByNickname failed", err,
+			"opUserID", mcontext.GetOpUserID(ctx), "nickname", nickname)
+		return nil, err
+	}
+	if len(users) == 0 {
+		return &pbuser.GetUsersByNicknameResp{}, nil
+	}
+
+	userIDs := datautil.Slice(users, func(u *tablerelation.User) string { return u.UserID })
+	blocked, err := s.globalBlackDB.FindBlocked(ctx, userIDs)
+	if err != nil {
+		log.ZError(ctx, "GetUsersByNickname: FindBlocked failed", err,
+			"opUserID", mcontext.GetOpUserID(ctx), "count", len(userIDs))
+		return nil, err
+	}
+	if len(blocked) > 0 {
+		banned := make(map[string]struct{}, len(blocked))
+		for _, b := range blocked {
+			banned[b.UserID] = struct{}{}
+		}
+		filtered := make([]*tablerelation.User, 0, len(users))
+		for _, u := range users {
+			if _, ok := banned[u.UserID]; !ok {
+				filtered = append(filtered, u)
+			}
+		}
+		users = filtered
+	}
+	if len(users) == 0 {
+		return &pbuser.GetUsersByNicknameResp{}, nil
+	}
+
+	pbUsers := convert.UsersDB2Pb(users)
+	viewerID := mcontext.GetOpUserID(ctx)
+	if err := s.applyPhoneVisibility(ctx, viewerID, pbUsers, users); err != nil {
+		log.ZError(ctx, "GetUsersByNickname: applyPhoneVisibility failed", err,
+			"opUserID", viewerID, "count", len(users))
+		return nil, err
+	}
+	return &pbuser.GetUsersByNicknameResp{UsersInfo: pbUsers}, nil
+}
+
 func (s *userServer) AccountCheck(ctx context.Context, req *pbuser.AccountCheckReq) (resp *pbuser.AccountCheckResp, err error) {
 	resp = &pbuser.AccountCheckResp{}
 	if datautil.Duplicate(req.CheckUserIDs) {
diff --git a/pkg/common/storage/controller/user.go b/pkg/common/storage/controller/user.go
index db056ae9a..d1ff44101 100644
--- a/pkg/common/storage/controller/user.go
+++ b/pkg/common/storage/controller/user.go
@@ -37,6 +37,8 @@ type UserDatabase interface {
 	Find(ctx context.Context, userIDs []string) (users []*model.User, err error)
 	// Find userInfo By Nickname
 	FindByNickname(ctx context.Context, nickname string) (users []*model.User, err error)
+	// FindOrdinaryUsersByNickname 昵称精确匹配，仅普通用户（与分页拉取用户 level 一致）
+	FindOrdinaryUsersByNickname(ctx context.Context, level1 int64, level2 int64, nickname string) (users []*model.User, err error)
 	// FindByPhone looks up a single user by exact phone number.
 	// Returns errs.ErrRecordNotFound if no user has the given phone.
 	FindByPhone(ctx context.Context, phone string) (user *model.User, err error)
@@ -138,6 +140,10 @@ func (u *userDatabase) FindByNickname(ctx context.Context, nickname string) (use
 	return u.userDB.TakeByNickname(ctx, nickname)
 }
 
+func (u *userDatabase) FindOrdinaryUsersByNickname(ctx context.Context, level1, level2 int64, nickname string) ([]*model.User, error) {
+	return u.userDB.FindOrdinaryUsersByNickname(ctx, level1, level2, nickname)
+}
+
 func (u *userDatabase) FindByPhone(ctx context.Context, phone string) (*model.User, error) {
 	return u.userDB.FindByPhone(ctx, phone)
 }
diff --git a/pkg/common/storage/database/mgo/user.go b/pkg/common/storage/database/mgo/user.go
index b2e437f14..5a2dc7e34 100644
--- a/pkg/common/storage/database/mgo/user.go
+++ b/pkg/common/storage/database/mgo/user.go
@@ -38,10 +38,12 @@ func NewUserMongo(db *mongo.Database) (database.User, error) {
 			Options: options.Index().SetUnique(true),
 		},
 		{
-			// 支持按手机号快速查找，phone 为空串的文档不参与索引
 			Keys:    bson.D{{Key: "phone", Value: 1}},
 			Options: options.Index().SetSparse(true),
 		},
+		{
+			Keys: bson.D{{Key: "nickname", Value: 1}},
+		},
 	}
 	if _, err := coll.Indexes().CreateMany(context.Background(), indexes); err != nil {
 		return nil, errs.Wrap(err)
@@ -80,6 +82,14 @@ func (u *UserMgo) TakeByNickname(ctx context.Context, nickname string) (user []*
 	return mongoutil.Find[*model.User](ctx, u.coll, bson.M{"nickname": nickname})
 }
 
+func (u *UserMgo) FindOrdinaryUsersByNickname(ctx context.Context, level1, level2 int64, nickname string) ([]*model.User, error) {
+	query := bson.M{
+		"nickname":         nickname,
+		"app_manger_level": bson.M{"$in": []int64{level1, level2}},
+	}
+	return mongoutil.Find[*model.User](ctx, u.coll, query, options.Find().SetLimit(100))
+}
+
 func (u *UserMgo) FindByPhone(ctx context.Context, phone string) (*model.User, error) {
 	return mongoutil.FindOne[*model.User](ctx, u.coll, bson.M{"phone": phone})
 }
diff --git a/pkg/common/storage/database/user.go b/pkg/common/storage/database/user.go
index 7e7df0836..2682bc780 100644
--- a/pkg/common/storage/database/user.go
+++ b/pkg/common/storage/database/user.go
@@ -29,6 +29,8 @@ type User interface {
 	Take(ctx context.Context, userID string) (user *model.User, err error)
 	TakeNotification(ctx context.Context, level int64) (user []*model.User, err error)
 	TakeByNickname(ctx context.Context, nickname string) (user []*model.User, err error)
+	// FindOrdinaryUsersByNickname 按昵称精确匹配，且 app_manger_level 为普通用户范围（与分页拉取用户一致）
+	FindOrdinaryUsersByNickname(ctx context.Context, level1 int64, level2 int64, nickname string) (users []*model.User, err error)
 	FindByPhone(ctx context.Context, phone string) (user *model.User, err error)
 	Page(ctx context.Context, pagination pagination.Pagination) (count int64, users []*model.User, err error)
 	PageFindUser(ctx context.Context, level1 int64, level2 int64, pagination pagination.Pagination) (count int64, users []*model.User, err error)