diff --git a/client/src/app/site/modules/global-headbar/components/global-headbar/global-headbar.component.ts b/client/src/app/site/modules/global-headbar/components/global-headbar/global-headbar.component.ts
index 335bc3aa10..7c26bc3093 100644
--- a/client/src/app/site/modules/global-headbar/components/global-headbar/global-headbar.component.ts
+++ b/client/src/app/site/modules/global-headbar/components/global-headbar/global-headbar.component.ts
@@ -1,8 +1,10 @@
 import { Component } from '@angular/core';
+import { MatDialog } from '@angular/material/dialog';
 import { ActiveMeetingService } from 'src/app/site/pages/meetings/services/active-meeting.service';
 import { OrganizationService } from 'src/app/site/pages/organization/services/organization.service';
 
 import { GlobalHeadbarService } from '../../global-headbar.service';
+import { GlobalSearchComponent } from '../global-search/global-search.component';
 
 @Component({
     selector: `os-global-headbar`,
@@ -10,7 +12,7 @@ import { GlobalHeadbarService } from '../../global-headbar.service';
     styleUrls: [`./global-headbar.component.scss`]
 })
 export class GlobalHeadbarComponent {
-    public isSearchEnabled = false;
+    public isSearchEnabled = true;
 
     public get displayName(): string {
         if (this.activeMeeting.meeting) {
@@ -25,8 +27,11 @@ export class GlobalHeadbarComponent {
     public constructor(
         private activeMeeting: ActiveMeetingService,
         private orgaService: OrganizationService,
+        private dialog: MatDialog,
         public headbarService: GlobalHeadbarService
     ) {}
 
-    public openSearch(): void {}
+    public openSearch(): void {
+        this.dialog.open(GlobalSearchComponent);
+    }
 }
diff --git a/client/src/app/site/modules/global-headbar/components/global-search/global-search.component.html b/client/src/app/site/modules/global-headbar/components/global-search/global-search.component.html
index 9f29757f44..1dce3817a4 100644
--- a/client/src/app/site/modules/global-headbar/components/global-search/global-search.component.html
+++ b/client/src/app/site/modules/global-headbar/components/global-search/global-search.component.html
@@ -1 +1,47 @@
-<p>global-search works!</p>
+<div>
+    <mat-form-field class="search-field" appearance="outline" floatLabel="never">
+        <input
+            matInput
+            [(ngModel)]="searchTerm"
+            (change)="searchChange()"
+            placeholder="{{ 'Search' | translate }}"
+            autofocus>
+        <mat-icon matSuffix>search</mat-icon>
+    </mat-form-field>
+
+    <section class="filter-section" [formGroup]="currentFilters">
+        <ul class="filters-list">
+            <li *ngFor="let filter of availableFilters | keyvalue">
+                <mat-checkbox formControlName="{{ filter.key }}">{{ filter.value }}</mat-checkbox>
+            </li>
+        </ul>
+    </section>
+</div>
+
+<mat-dialog-content class="search-results">
+    <section *ngFor="let category of results | keyvalue" class="search-results-category">
+        <h2>
+            <span
+                [matBadge]="category.value.length < 100 ? category.value.length : '99+'"
+                [matBadgeOverlap]="false">{{ availableFilters[category.key] | translate }}</span>
+        </h2>
+        <ng-container *ngFor="let result of category.value">
+            <a
+                *ngIf="result.fqid.startsWith('mediafile')"
+                class="search-results-entry"
+                [href]="result.url"
+                target="blank"
+                mat-dialog-close>
+                <h3 *ngIf="result.title">{{ result.title }}</h3>
+            </a>
+            <router-link
+                *ngIf="!result.fqid.startsWith('mediafile')"
+                class="search-results-entry"
+                [routerLink]="result.url"
+                mat-dialog-close>
+                <h3 *ngIf="result.title">{{ result.title }}</h3>
+                <p *ngIf="result.text" [innerHtml]="result.text"></p>
+            </router-link>
+        </ng-container>
+    </section>
+</mat-dialog-content>
diff --git a/client/src/app/site/modules/global-headbar/components/global-search/global-search.component.scss b/client/src/app/site/modules/global-headbar/components/global-search/global-search.component.scss
index e69de29bb2..e48934747e 100644
--- a/client/src/app/site/modules/global-headbar/components/global-search/global-search.component.scss
+++ b/client/src/app/site/modules/global-headbar/components/global-search/global-search.component.scss
@@ -0,0 +1,40 @@
+.search-field {
+    width: 100%;
+}
+
+.search-results {
+    padding: 0;
+
+    .search-results-category h2 {
+        padding: 0 24px;
+        margin-top: 1em;
+        margin-bottom: 8px;
+    }
+
+    .search-results-entry {
+        display: block;
+        padding: 1em 24px;
+        cursor: pointer;
+        text-decoration: none;
+        > :first-of-type {
+            margin-top: 0;
+        }
+        > :last-of-type {
+            margin-bottom: 0;
+        }
+    }
+
+    .search-results-entry:nth-of-type(2n + 1) {
+        background-color: #eee;
+    }
+}
+
+.filters-list {
+    list-style: none;
+    padding: 0;
+    display: flex;
+    flex-wrap: wrap;
+    > li {
+        padding: 0 12px;
+    }
+}
diff --git a/client/src/app/site/modules/global-headbar/components/global-search/global-search.component.ts b/client/src/app/site/modules/global-headbar/components/global-search/global-search.component.ts
index 482ff13bb6..97eb9a63c0 100644
--- a/client/src/app/site/modules/global-headbar/components/global-search/global-search.component.ts
+++ b/client/src/app/site/modules/global-headbar/components/global-search/global-search.component.ts
@@ -1,9 +1,43 @@
-import { ChangeDetectionStrategy, Component } from '@angular/core';
-
+import { ChangeDetectionStrategy, ChangeDetectorRef, Component } from '@angular/core';
+import { FormBuilder } from '@angular/forms';
+import { GlobalSearchEntry, GlobalSearchService } from 'src/app/site/services/global-search.service';
 @Component({
     selector: `os-global-search`,
     templateUrl: `./global-search.component.html`,
     styleUrls: [`./global-search.component.scss`],
     changeDetection: ChangeDetectionStrategy.OnPush
 })
-export class GlobalSearchComponent {}
+export class GlobalSearchComponent {
+    public searchTerm = ``;
+
+    public readonly availableFilters = {
+        committee: `Committees`,
+        meeting: `Meetings`,
+        motion: `Motions`,
+        assignment: `Elections`,
+        mediafile: `Files`,
+        user: `Participants`
+    };
+
+    public currentFilters = this.formBuilder.group(
+        Object.fromEntries(Object.keys(this.availableFilters).map(field => [field, true]))
+    );
+
+    public results: { [key: string]: GlobalSearchEntry[] } = {};
+
+    public constructor(
+        private globalSearchService: GlobalSearchService,
+        private formBuilder: FormBuilder,
+        private cd: ChangeDetectorRef
+    ) {}
+
+    public async searchChange() {
+        this.results = await this.globalSearchService.searchChange(
+            this.searchTerm,
+            Object.keys(this.availableFilters).filter(
+                field => this.currentFilters.get(field) && this.currentFilters.get(field).getRawValue()
+            )
+        );
+        this.cd.markForCheck();
+    }
+}
diff --git a/client/src/app/site/modules/global-headbar/global-headbar.module.ts b/client/src/app/site/modules/global-headbar/global-headbar.module.ts
index 5fb7ffaf7a..0469cc9396 100644
--- a/client/src/app/site/modules/global-headbar/global-headbar.module.ts
+++ b/client/src/app/site/modules/global-headbar/global-headbar.module.ts
@@ -2,7 +2,10 @@ import { PortalModule } from '@angular/cdk/portal';
 import { ScrollingModule } from '@angular/cdk/scrolling';
 import { CommonModule } from '@angular/common';
 import { NgModule } from '@angular/core';
+import { FormsModule, ReactiveFormsModule } from '@angular/forms';
+import { MatBadgeModule } from '@angular/material/badge';
 import { MatButtonModule } from '@angular/material/button';
+import { MatCheckboxModule } from '@angular/material/checkbox';
 import { MatDialogModule } from '@angular/material/dialog';
 import { MatDividerModule } from '@angular/material/divider';
 import { MatIconModule } from '@angular/material/icon';
@@ -28,6 +31,8 @@ const MODULES = [
     MatMenuModule,
     MatTooltipModule,
     MatDialogModule,
+    MatCheckboxModule,
+    MatBadgeModule,
     PortalModule
 ];
 const DECLARATIONS = [GlobalHeadbarComponent];
@@ -41,6 +46,8 @@ const DECLARATIONS = [GlobalHeadbarComponent];
         UserComponentsModule,
         RouterModule,
         ScrollingModule,
+        FormsModule,
+        ReactiveFormsModule,
         ...MODULES
     ]
 })
diff --git a/client/src/app/site/services/global-search.service.ts b/client/src/app/site/services/global-search.service.ts
new file mode 100644
index 0000000000..4dd69f67dd
--- /dev/null
+++ b/client/src/app/site/services/global-search.service.ts
@@ -0,0 +1,90 @@
+import { Injectable } from '@angular/core';
+import { Fqid } from 'src/app/domain/definitions/key-types';
+import { HttpService } from 'src/app/gateways/http.service';
+import { collectionFromFqid, idFromFqid } from 'src/app/infrastructure/utils/transform-functions';
+
+import { ActiveMeetingService } from '../pages/meetings/services/active-meeting.service';
+
+export interface GlobalSearchEntry {
+    title: string;
+    text: string;
+    fqid: string;
+    url?: string;
+}
+
+@Injectable({
+    providedIn: `root`
+})
+export class GlobalSearchService {
+    public constructor(private http: HttpService, private activeMeeting: ActiveMeetingService) {}
+
+    public async searchChange(
+        searchTerm: string,
+        collections: string[] = []
+    ): Promise<{ [key: string]: GlobalSearchEntry[] }> {
+        const rawResults: { [fqid: string]: any } = await this.http.get(`/system/search`, null, { q: searchTerm });
+        let results = Object.keys(rawResults)
+            .filter(fqid => {
+                const collection = collectionFromFqid(fqid);
+                return collections.includes(collection);
+            })
+            .map(fqid => this.getResult(fqid, rawResults[fqid]));
+
+        let collectionMap: { [key: string]: GlobalSearchEntry[] } = {};
+        for (let result of results) {
+            const collection = collectionFromFqid(result.fqid);
+            if (!collectionMap[collection]) {
+                collectionMap[collection] = [];
+            }
+
+            collectionMap[collection].push(result);
+        }
+
+        return collectionMap;
+    }
+
+    private getResult(fqid: Fqid, content: any) {
+        const collection = collectionFromFqid(fqid);
+        const id = content.sequential_number || idFromFqid(fqid);
+        let title = content.title || content.name;
+        let text = content.text || content.description;
+        let url = ``;
+
+        switch (collection) {
+            case `committee`:
+                url = `/committees/${id}`;
+                break;
+            case `meeting`:
+                url = `/${id}`;
+                break;
+            case `motion`:
+                url = `/${content.meeting_id}/motions/${id}`;
+                break;
+            case `assignment`:
+                url = `/${content.meeting_id}/assignments/${id}`;
+                break;
+            case `mediafile`:
+                url = `/system/media/get/${id}`;
+                break;
+            case `user`:
+                const firstName = content.first_name?.trim() || ``;
+                const lastName = content.last_name?.trim() || ``;
+                const userName = content.username?.trim() || ``;
+                const name = firstName || lastName ? `${firstName} ${lastName}` : userName;
+                title = name?.trim() || ``;
+                if (this.activeMeeting.meetingId && content.meeting_ids?.includes(this.activeMeeting.meetingId)) {
+                    url = `/${this.activeMeeting.meetingId}/participants/${id}`;
+                } else {
+                    url = `/accounts/${id}`;
+                }
+                break;
+        }
+
+        return {
+            title,
+            text,
+            fqid,
+            url
+        };
+    }
+}