4th century

The 4th century was the century from 301 to 400.

 Decades and years 
Note: years before or after the 4th century are in italics.

 290s 290 291 292 293 294 295 296 297 298 299 300s 300 301 302 303 304 305 306 307 308 309 310s 310 311 312 313 314 315 316 317 318 319 320s 320 321 322 323 324 325 326 327 328 329 330s 330 331 332 333 334 335 336 337 338 339 340s 340 341 342 343 344 345 346 347 348 349 350s 350 351 352 353 354 355 356 357 358 359 360s 360 361 362 363 364 365 366 367 368 369 370s 370 371 372 373 374 375 376 377 378 379 380s 380 381 382 383 384 385 386 387 388 389 390s 390 391 392 393 394 395 396 397 398 399 400s 400 401 402 403 404 405 406 407 408 409