diff --git a/PARR.API/Contracts/V1/Requests/SubprocessRequest.cs b/PARR.API/Contracts/V1/Requests/SubprocessRequest.cs
new file mode 100644
index 00000000..6b91387f
--- /dev/null
+++ b/PARR.API/Contracts/V1/Requests/SubprocessRequest.cs
@@ -0,0 +1,9 @@
+namespace PARR.API.Contracts.V1.Requests
+{
+    public class SubprocessRequest
+    {
+        public required string Name { get; set; }
+        public int EsppId { get; set; }
+        public Guid ProcessId { get; set; }
+    }
+}
diff --git a/PARR.API/Controllers/V1/SubprocessController.cs b/PARR.API/Controllers/V1/SubprocessController.cs
new file mode 100644
index 00000000..af6df569
--- /dev/null
+++ b/PARR.API/Controllers/V1/SubprocessController.cs
@@ -0,0 +1,203 @@
+using AutoMapper;
+using FluentValidation;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using PARR.API.Contracts.V1;
+using PARR.API.Contracts.V1.Requests;
+using PARR.API.Contracts.V1.Requests.Queries;
+using PARR.API.Contracts.V1.Responses;
+using PARR.API.Contracts.V1.Responses.Base;
+using PARR.API.Controllers.V1.Base;
+using PARR.API.Extensions;
+using PARR.API.Services.Interfaces;
+using PARR.Constants;
+using PARR.DAL.DomainModels;
+using PARR.DAL.Models;
+using PARR.DAL.Services.Interfaces;
+
+namespace PARR.API.Controllers.V1
+{
+    /// <summary>
+    /// Управление Подпроцессами
+    /// </summary>
+    [Authorize(Roles = ParrRoles.Administrator.Role)]
+    public class SubprocessController : BaseApiController
+    {
+        private readonly ILogger<SubprocessController> logger;
+        private readonly IMapper mapper;
+        private readonly ISubprocessService subprocessService;
+        private readonly IValidator<SubprocessRequest> validator;
+        private readonly IUriService uriService;
+
+        public SubprocessController(
+            ILogger<SubprocessController> logger,
+            IMapper mapper,
+            ISubprocessService subprocessService,
+            IValidator<SubprocessRequest> validator,
+            IUriService uriService
+            )
+        {
+            this.logger = logger;
+            this.mapper = mapper;
+            this.subprocessService = subprocessService;
+            this.validator = validator;
+            this.uriService = uriService;
+        }
+
+
+        /// <summary>
+        /// Создать подпроцесс
+        /// </summary>
+        /// <param name="request"></param>
+        /// <returns></returns>
+        [HttpPost(ApiRoutes.Subprocess.Create)]
+        public async Task<IActionResult> Create([FromBody] SubprocessRequest request)
+        {
+            var resultValidate = await validator.ValidateAsync(request);
+            if (!resultValidate.IsValid)
+                return BadRequest(new Response(resultValidate.Errors));
+
+            var existName = await subprocessService.Get().FirstOrDefaultAsync(t => t.Name == request.Name);
+            if (existName != null)
+                return BadRequest(new Response(false, new List<ErrorModel> { new ErrorModel { FieldName = nameof(request.Name), Message = $"Подпроцесс с именем \"{request.Name}\" уже существует." } }));
+
+            var subprocess = new Subprocess
+            {
+                Id = Guid.NewGuid(),
+                Name = request.Name,
+                EsppId = request.EsppId,
+                ProcessId = request.ProcessId,
+            };
+
+            if (!await subprocessService.CreateAsync(subprocess) || !await subprocessService.CommitAsync())
+                return BadRequest(new Response(false, new List<ErrorModel> { new ErrorModel { Message = "Ошибка при записи нового подпроцесса в базу данных" } }));
+
+            logger.LogInformation($"Пользователь {User.Identity?.Name} добавил подпроцесс: {subprocess.Name}, {subprocess.EsppId}, {subprocess.ProcessId}");
+
+            var locationUri = uriService.GetUri(ApiRoutes.Subprocess.Get, ApiRoutes.Subprocess.getParam, subprocess.Id);
+
+            return Created(locationUri, new Response<SubprocessResponse>(mapper.Map<SubprocessResponse>(subprocess), true));
+        }
+
+
+        /// <summary>
+        /// Список подпроцессов постранично
+        /// </summary>
+        /// <param name="paginationQuery"></param>
+        /// <returns></returns>
+        [HttpGet(ApiRoutes.Subprocess.GetAll)]
+        public async Task<IActionResult> GetAll([FromQuery] PaginationQuery paginationQuery)
+        {
+            var paginationFilter = mapper.Map<PaginationFilter>(paginationQuery);
+
+            IQueryable<Subprocess> query = subprocessService.Get()
+                                        .OrderBy(t => t.Name);
+
+            var subprocesses = await subprocessService.GetPage(query, paginationFilter).ToListAsync();
+
+            if (!subprocesses.Any())
+                return NoContent();
+
+            var subprocessesResponse = mapper.Map<List<SubprocessResponse>>(subprocesses);
+            var paginationResponse = new PagedResponse<SubprocessResponse>(subprocessesResponse, true).GetPaginatedProps(paginationFilter, query);
+
+            return Ok(paginationResponse);
+        }
+
+
+        /// <summary>
+        /// Получить подпроцесс по id
+        /// </summary>
+        /// <param name="id"></param>
+        /// <returns></returns>
+        [HttpGet(ApiRoutes.Subprocess.Get)]
+        public async Task<IActionResult> GetById([FromRoute] Guid id)
+        {
+            var subprocess = await subprocessService.Get()
+                                .FirstOrDefaultAsync(t => t.Id == id);
+
+            if (subprocess == null)
+                return NotFound();
+
+            var response = mapper.Map<SubprocessResponse>(subprocess);
+
+            return Ok(new Response<SubprocessResponse>(response, true));
+        }
+
+
+        /// <summary>
+        /// Получить связанные с подпроцессом ТНК
+        /// </summary>
+        /// <param name="id"></param>
+        /// <returns></returns>
+        [HttpGet(ApiRoutes.Subprocess.GetTnks)]
+        public async Task<IActionResult> Get([FromRoute] Guid id)
+        {
+            var subprocess = await subprocessService.Get()
+                                .Include(t => t.Tnks)
+                                .FirstOrDefaultAsync(t => t.Id == id);
+
+            if (subprocess == null)
+                return BadRequest(new Response(false, new List<ErrorModel> { new ErrorModel { Message = $"Не найден подпроцесс с id: {id}" } }));
+
+            var response = mapper.Map<List<SubprocessResponse>>(subprocess.Tnks.OrderBy(t => t.Name).ToList());
+
+            return Ok(new Response<List<SubprocessResponse>>(response, true));
+        }
+
+
+        /// <summary>
+        /// Обновить подпроцесс
+        /// </summary>
+        /// <param name="id"></param>
+        /// <param name="request"></param>
+        /// <returns></returns>
+        [HttpPut(ApiRoutes.Subprocess.Update)]
+        public async Task<IActionResult> Update([FromRoute] Guid id, [FromBody] SubprocessRequest request)
+        {
+            var resultValidate = await validator.ValidateAsync(request);
+            if (!resultValidate.IsValid)
+                return BadRequest(new Response(resultValidate.Errors));
+
+            var orig = await subprocessService.Get()
+                                .FirstOrDefaultAsync(t => t.Id == id);
+
+            if (orig == null)
+                return BadRequest(new Response(false, new List<ErrorModel> { new ErrorModel { Message = $"Ошибка при изменении подпроцесса. Не найдена подпроцесс Id: {id}" } }));
+
+            orig.Name = request.Name;
+            orig.EsppId = request.EsppId;
+            orig.ProcessId = request.ProcessId;
+
+            if (!await subprocessService.CommitAsync())
+                return BadRequest(new Response(false, new List<ErrorModel> { new ErrorModel { Message = "Ошибка записи в базу данных изменений подпроцесса." } }));
+
+            logger.LogInformation($"Пользователь {User.Identity?.Name} обновил подпроцесс: {orig.Id}, {orig.Name}, {orig.EsppId}, {orig.ProcessId}");
+
+            return Ok(new Response<SubprocessResponse>(mapper.Map<SubprocessResponse>(orig), true));
+        }
+
+
+        /// <summary>
+        /// Удалить подпроцесс
+        /// </summary>
+        /// <param name="id"></param>
+        /// <returns></returns>
+        [HttpDelete(ApiRoutes.Subprocess.Delete)]
+        public async Task<IActionResult> Delete([FromRoute] Guid id)
+        {
+            var subprocess = await subprocessService.GetAsync(id);
+
+            if (subprocess == null)
+                return BadRequest(new Response(false, new List<ErrorModel> { new ErrorModel { Message = $"Ошибка при удалении подпроцесса. Не найден подпроцесс Id: {id}" } }));
+
+            if (!subprocessService.Delete(subprocess) || !await subprocessService.CommitAsync())
+                return BadRequest(new Response(false, new List<ErrorModel> { new ErrorModel { Message = $"Ошибка при удалении подпроцесса из базы данных" } }));
+
+            logger.LogInformation($"Пользователь {User.Identity?.Name} удалил подпроцесс: {subprocess.Id}, {subprocess.Name}, {subprocess.EsppId}, {subprocess.ProcessId}");
+
+            return NoContent();
+        }
+    }
+}
diff --git a/PARR.API/Controllers/V1/TnkController.cs b/PARR.API/Controllers/V1/TnkController.cs
index 09e6084f..7d58c368 100644
--- a/PARR.API/Controllers/V1/TnkController.cs
+++ b/PARR.API/Controllers/V1/TnkController.cs
@@ -1,21 +1,20 @@
 using AutoMapper;
 using FluentValidation;
 using Microsoft.AspNetCore.Authorization;
-using Microsoft.AspNetCore.Cors.Infrastructure;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
 using PARR.API.Contracts.V1;
 using PARR.API.Contracts.V1.Requests;
 using PARR.API.Contracts.V1.Requests.Queries;
-using PARR.API.Contracts.V1.Responses.Base;
 using PARR.API.Contracts.V1.Responses;
+using PARR.API.Contracts.V1.Responses.Base;
 using PARR.API.Controllers.V1.Base;
+using PARR.API.Extensions;
 using PARR.API.Services.Interfaces;
 using PARR.Constants;
 using PARR.DAL.DomainModels;
-using PARR.DAL.Services.Interfaces;
 using PARR.DAL.Models;
-using Microsoft.EntityFrameworkCore;
-using PARR.API.Extensions;
+using PARR.DAL.Services.Interfaces;
 
 namespace PARR.API.Controllers.V1
 {
@@ -74,7 +73,7 @@ namespace PARR.API.Controllers.V1
             if (!await tnkService.CreateAsync(tnk) || !await tnkService.CommitAsync())
                 return BadRequest(new Response(false, new List<ErrorModel> { new ErrorModel { Message = "Ошибка при записи новой ТНК в базу данных" } }));
 
-            logger.LogInformation($"Пользователь {User.Identity?.Name} добавил вид работ: {tnk.Name}, {tnk.EsppId}, {tnk.SubprocessId}");
+            logger.LogInformation($"Пользователь {User.Identity?.Name} добавил ТНК: {tnk.Name}, {tnk.EsppId}, {tnk.SubprocessId}");
 
             var locationUri = uriService.GetUri(ApiRoutes.Tnk.Get, ApiRoutes.Tnk.getParam, tnk.Id);
 
@@ -93,7 +92,6 @@ namespace PARR.API.Controllers.V1
             var paginationFilter = mapper.Map<PaginationFilter>(paginationQuery);
 
             IQueryable<Tnk> query = tnkService.Get()
-                //.Include(t=>t.Subprocess).ThenInclude(t=>t.Process)
                                         .OrderBy(t => t.Name);
 
             var tnks = await tnkService.GetPage(query, paginationFilter).ToListAsync();
@@ -143,7 +141,7 @@ namespace PARR.API.Controllers.V1
             if (tnk == null)
                 return BadRequest(new Response(false, new List<ErrorModel> { new ErrorModel { Message = $"Не найдена ТНК с id: {id}" } }));
 
-            var response = mapper.Map<List<WorkResponse>>(tnk.Works.OrderBy(t=>t.Name).ToList());//Roles.Select(t => t.Role)).OrderBy(t => t.Description).ToList();
+            var response = mapper.Map<List<WorkResponse>>(tnk.Works.OrderBy(t => t.Name).ToList());
 
             return Ok(new Response<List<WorkResponse>>(response, true));
         }
diff --git a/PARR.API/Validators/SubprocessValidator.cs b/PARR.API/Validators/SubprocessValidator.cs
new file mode 100644
index 00000000..062cf49d
--- /dev/null
+++ b/PARR.API/Validators/SubprocessValidator.cs
@@ -0,0 +1,40 @@
+using FluentValidation;
+using PARR.API.Contracts.V1.Requests;
+using PARR.DAL.Services.Interfaces;
+
+namespace PARR.API.Validators
+{
+    public class SubprocessValidator : AbstractValidator<SubprocessRequest>
+    {
+        private readonly IProcessService processService;
+        private bool? isValid = null;
+
+        public SubprocessValidator(
+            IProcessService processService
+            )
+        {
+            this.processService = processService;
+
+            RuleFor(t => t.Name).NotEmpty().NotNull().WithMessage("Имя подпроцесса не может быть пустым");
+
+            RuleFor(t => t.EsppId).NotEmpty().NotNull().WithMessage("EsppId не может быть пустым");
+
+            RuleFor(t => t.ProcessId).NotEmpty().NotNull().WithMessage("Подпроцесс должна быть связан с процессом. ProcessId не может быть пустым");
+
+            RuleFor(t => t.ProcessId)
+                .MustAsync(async (entity, value, c) => await IsProcessExist(entity))
+                .WithMessage("У данного подпроцесса указан несуществующий Id процесса");
+        }
+
+        private async Task<bool> IsProcessExist(SubprocessRequest request)
+        {
+            //чтобы не делать 2 раза валидацию
+            if (isValid.HasValue)
+                return isValid.Value;
+
+            isValid = await processService.GetAsync(request.ProcessId) != null;
+
+            return isValid.Value;
+        }
+    }
+}