diff --git a/installer/ElfisaPharmacy.iss b/installer/ElfisaPharmacy.iss
index 768fc1b..5a6c953 100644
--- a/installer/ElfisaPharmacy.iss
+++ b/installer/ElfisaPharmacy.iss
@@ -3,7 +3,7 @@
 
 #define MyAppName "Электронная Фармация"
 #define MyAppBrand "ЭльФиСА"
-#define MyAppVersion "2.0.7"
+#define MyAppVersion "2.0.8"
 #define MyAppPublisher "PharmData"
 #define MyAppURL "https://cdn.24pharmdata.ru"
 #define MyAppSupportURL "https://24pharmdata.ru"
diff --git a/src/Elfisa.Avalonia/App.axaml b/src/Elfisa.Avalonia/App.axaml
index dd9e0f1..c2a57d4 100644
--- a/src/Elfisa.Avalonia/App.axaml
+++ b/src/Elfisa.Avalonia/App.axaml
@@ -41,11 +41,18 @@
             <SolidColorBrush x:Key="SidebarActive" Color="#0A4A44"/>
             <SolidColorBrush x:Key="SidebarText" Color="#D5F5F0"/>
             <SolidColorBrush x:Key="OnAccent" Color="#FFFFFF"/>
+
+            <!-- Шрифт интерфейса. Меняется из Настроек: Resources["AppFontFamily"] = FontFamily. -->
+            <FontFamily x:Key="AppFontFamily">Segoe UI</FontFamily>
         </ResourceDictionary>
     </Application.Resources>
 
     <Application.Styles>
         <FluentTheme />
+        <!-- Единый шрифт для всех окон (дочерние контролы наследуют). -->
+        <Style Selector="Window">
+            <Setter Property="FontFamily" Value="{DynamicResource AppFontFamily}"/>
+        </Style>
         <StyleInclude Source="avares://Avalonia.Controls.DataGrid/Themes/Fluent.xaml"/>
         <StyleInclude Source="/Styles/Elfisa.axaml"/>
     </Application.Styles>
diff --git a/src/Elfisa.Avalonia/App.axaml.cs b/src/Elfisa.Avalonia/App.axaml.cs
index cecd0c5..52ec1c3 100644
--- a/src/Elfisa.Avalonia/App.axaml.cs
+++ b/src/Elfisa.Avalonia/App.axaml.cs
@@ -4,6 +4,7 @@ using Avalonia.Data.Core;
 using Avalonia.Data.Core.Plugins;
 using System.Linq;
 using Avalonia.Markup.Xaml;
+using Avalonia.Media;
 using Elfisa.Avalonia.ViewModels;
 using Elfisa.Avalonia.Views;
 
@@ -11,17 +12,30 @@ namespace Elfisa.Avalonia;
 
 public partial class App : Application
 {
+    /// <summary>Дефолтный шрифт интерфейса (когда «По умолчанию»).</summary>
+    public const string DefaultFont = "Segoe UI";
+
     public override void Initialize()
     {
         AvaloniaXamlLoader.Load(this);
     }
 
+    /// <summary>Применяет шрифт ко всему приложению (ресурс наследуется всеми окнами).</summary>
+    public static void ApplyFont(string? name)
+    {
+        var family = string.IsNullOrWhiteSpace(name) ? DefaultFont : name!;
+        if (Current is { } app)
+            app.Resources["AppFontFamily"] = new FontFamily(family);
+    }
+
     public override void OnFrameworkInitializationCompleted()
     {
         RequestedThemeVariant = Elfisa.Core.SettingsStore.Current.Theme == "Dark"
             ? global::Avalonia.Styling.ThemeVariant.Dark
             : global::Avalonia.Styling.ThemeVariant.Light;
 
+        ApplyFont(Elfisa.Core.SettingsStore.Current.FontFamily);
+
         if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
         {
             desktop.MainWindow = new MainWindow
diff --git a/src/Elfisa.Avalonia/Elfisa.Avalonia.csproj b/src/Elfisa.Avalonia/Elfisa.Avalonia.csproj
index fa58a39..30e2be0 100644
--- a/src/Elfisa.Avalonia/Elfisa.Avalonia.csproj
+++ b/src/Elfisa.Avalonia/Elfisa.Avalonia.csproj
@@ -5,9 +5,9 @@
     <Nullable>enable</Nullable>
     <ApplicationManifest>app.manifest</ApplicationManifest>
     <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
-    <Version>2.0.7</Version>
-    <AssemblyVersion>2.0.7.0</AssemblyVersion>
-    <FileVersion>2.0.7.0</FileVersion>
+    <Version>2.0.8</Version>
+    <AssemblyVersion>2.0.8.0</AssemblyVersion>
+    <FileVersion>2.0.8.0</FileVersion>
     <Product>ЭльФиСА — Электронная Фармация</Product>
     <Company>PharmData</Company>
     <!-- Кросс-платформенная публикация задаётся флагами CLI (RID + self-contained). -->
diff --git a/src/Elfisa.Avalonia/ViewModels/SettingsViewModel.cs b/src/Elfisa.Avalonia/ViewModels/SettingsViewModel.cs
index 61db261..03ccaf9 100644
--- a/src/Elfisa.Avalonia/ViewModels/SettingsViewModel.cs
+++ b/src/Elfisa.Avalonia/ViewModels/SettingsViewModel.cs
@@ -2,6 +2,7 @@ using System;
 using System.Collections.ObjectModel;
 using System.Linq;
 using System.Threading.Tasks;
+using Avalonia.Media;
 using CommunityToolkit.Mvvm.ComponentModel;
 using Elfisa.Core;
 
@@ -11,10 +12,17 @@ public partial class SettingsViewModel : ViewModelBase
 {
     private readonly ApiClient _api = new();
 
+    /// <summary>Пункт «По умолчанию» в списке шрифтов.</summary>
+    public const string DefaultFontLabel = "По умолчанию";
+
     [ObservableProperty] private string _apiBaseUrl = "";
     public string[] Themes { get; } = { "Светлая", "Тёмная" };
     [ObservableProperty] private int _themeIndex;
 
+    /// <summary>Все системные шрифты + «По умолчанию» первым.</summary>
+    public ObservableCollection<string> Fonts { get; } = new();
+    [ObservableProperty] private string _selectedFont = DefaultFontLabel;
+
     public ObservableCollection<BuyerLocationDto> Locations { get; } = new();
     [ObservableProperty] private BuyerLocationDto? _selectedLocation;
 
@@ -23,6 +31,20 @@ public partial class SettingsViewModel : ViewModelBase
         _api.SetToken(Session.Current.Token);
         ApiBaseUrl = SettingsStore.Current.ApiBaseUrl ?? AppConfig.DefaultApiBaseUrl;
         ThemeIndex = SettingsStore.Current.Theme == "Dark" ? 1 : 0;
+
+        Fonts.Add(DefaultFontLabel);
+        foreach (var f in FontManager.Current.SystemFonts
+                     .Select(x => x.Name)
+                     .Where(n => !string.IsNullOrWhiteSpace(n))
+                     .Distinct()
+                     .OrderBy(n => n, StringComparer.CurrentCultureIgnoreCase))
+            Fonts.Add(f);
+
+        var saved = SettingsStore.Current.FontFamily;
+        SelectedFont = !string.IsNullOrWhiteSpace(saved) && Fonts.Contains(saved!)
+            ? saved!
+            : DefaultFontLabel;
+
         if (Session.Current.IsAuthenticated) _ = LoadLocationsAsync();
     }
 
diff --git a/src/Elfisa.Avalonia/Views/SettingsWindow.axaml b/src/Elfisa.Avalonia/Views/SettingsWindow.axaml
index d350377..243588a 100644
--- a/src/Elfisa.Avalonia/Views/SettingsWindow.axaml
+++ b/src/Elfisa.Avalonia/Views/SettingsWindow.axaml
@@ -3,7 +3,7 @@
         xmlns:vm="using:Elfisa.Avalonia.ViewModels"
         x:Class="Elfisa.Avalonia.Views.SettingsWindow"
         x:DataType="vm:SettingsViewModel"
-        Width="460" Height="440" CanResize="False"
+        Width="460" Height="520" CanResize="False"
         WindowStartupLocation="CenterOwner"
         Background="{DynamicResource Bg}"
         Title="Настройки">
@@ -21,6 +21,18 @@
             <ComboBox ItemsSource="{Binding Themes}" SelectedIndex="{Binding ThemeIndex}" HorizontalAlignment="Stretch"/>
         </StackPanel>
 
+        <StackPanel Spacing="6">
+            <TextBlock Text="Шрифт" Classes="label"/>
+            <ComboBox ItemsSource="{Binding Fonts}" SelectedItem="{Binding SelectedFont}"
+                      HorizontalAlignment="Stretch" MaxDropDownHeight="360">
+                <ComboBox.ItemTemplate>
+                    <DataTemplate>
+                        <TextBlock Text="{Binding}" FontFamily="{Binding}"/>
+                    </DataTemplate>
+                </ComboBox.ItemTemplate>
+            </ComboBox>
+        </StackPanel>
+
         <StackPanel Spacing="6">
             <TextBlock Text="Грузополучатель по умолчанию" Classes="label"/>
             <ComboBox ItemsSource="{Binding Locations}" SelectedItem="{Binding SelectedLocation}" HorizontalAlignment="Stretch"/>
diff --git a/src/Elfisa.Avalonia/Views/SettingsWindow.axaml.cs b/src/Elfisa.Avalonia/Views/SettingsWindow.axaml.cs
index f867800..05f1cf9 100644
--- a/src/Elfisa.Avalonia/Views/SettingsWindow.axaml.cs
+++ b/src/Elfisa.Avalonia/Views/SettingsWindow.axaml.cs
@@ -42,11 +42,14 @@ public partial class SettingsWindow : Window
         {
             SettingsStore.Current.ApiBaseUrl = string.IsNullOrWhiteSpace(vm.ApiBaseUrl) ? null : vm.ApiBaseUrl.Trim().TrimEnd('/');
             SettingsStore.Current.Theme = vm.ThemeIndex == 1 ? "Dark" : "Light";
+            var font = vm.SelectedFont == SettingsViewModel.DefaultFontLabel ? null : vm.SelectedFont;
+            SettingsStore.Current.FontFamily = font;
             SettingsStore.Current.DefaultLocationId = vm.SelectedLocation?.BuyerLocationId;
             SettingsStore.Save();
 
             if (Application.Current is { } app)
                 app.RequestedThemeVariant = vm.ThemeIndex == 1 ? ThemeVariant.Dark : ThemeVariant.Light;
+            App.ApplyFont(font); // применяем сразу ко всем окнам
         }
         Close();
     }
diff --git a/src/Elfisa.Core/SettingsStore.cs b/src/Elfisa.Core/SettingsStore.cs
index c0a1364..f504da1 100644
--- a/src/Elfisa.Core/SettingsStore.cs
+++ b/src/Elfisa.Core/SettingsStore.cs
@@ -6,6 +6,7 @@ public sealed class AppSettings
 {
     public string? ApiBaseUrl { get; set; }
     public string Theme { get; set; } = "Light";        // Light | Dark
+    public string? FontFamily { get; set; }              // шрифт интерфейса (null = по умолчанию)
     public string? DefaultLocationId { get; set; }
     public string? Token { get; set; }                   // сохранённая сессия
     public string? Role { get; set; }