# 101 Locked Protected area · Isfahan Karkas Protected Area منطقه حفاظت شده کرکس

# 174 Locked Lake · Dam or reservoir · Khuzestan Karkheh Dam Reservoir سد کرخه

# 102 Locked Protected area · Khuzestan Karkheh Protected Area منطقه حفاظت شده کرخه

# 120 Locked River · Khuzestan Karkheh River کرخه

# 88 Locked Peak · 4,000–4,999 m · Mazandaran 4212 m Karna کرنا

# 121 Locked River · Sistan and Baluchestan Karpasi Kowr کرپاسی کور

# 218 Locked Peak · 3,000–3,999 m · Chaharmahal and Bakhtiari 3962 m Karpush کرپوش

# 108 Locked Spring · Zanjan Karsaf Bolagh چشمه کرسف

# 122 Locked River · Khuzestan Karun River رود کارون

# 413 Locked Lake · Dam or reservoir · Khuzestan Karun-3 Lake

# 271 Locked Lake · Dam or reservoir · Chaharmahal and Bakhtiari Karun-4 Lake

# 12 Locked Forest · Forest · Razavi Khorasan Kasf Forest جنگل کاسف

# 123 Locked River · Razavi Khorasan Kashafrud river کشف رود

# 124 Locked River · Lorestan Kashkan River کشکان

# 45 Locked Forest · Forest park · Mazandaran Kashpel Forest Park کشپل

# 125 Locked River · Gilan Kasma River رودخانه کسما

# 255 Locked Peak · 2,000–2,999 m · Isfahan 2092 m Kasra کسرا

# 18 Locked Cave · Isfahan Kasra ‌Cave غار کسرا

# 19 Locked Cave · Zanjan Kataleh Khor Cave غار کتله خور

# 103 Locked Protected area · Tehran Kavdeh Wildlife Refuge پناهگاه حیات وحش کاوده

# 104 Locked Protected area · Semnan Kavir National Park پارک ملی کویر

# 378 Locked Lake · Lake · Isfahan Kavir-e Siah Kuh

# 228 Locked Peak · 3,000–3,999 m · Isfahan 3947 m Kaykhosrow کیخسرو

# 126 Locked River · Razavi Khorasan Kazgançaý

# 153 Locked Waterfall · Qazvin Kelak Waterfall آبشار کلاک

# 302 Locked Peak · 3,000–3,999 m · Alborz 3846 m Kelashvia کلاش ویا

# 28 Locked Geological formation · Hormozgan Kemeshk Salt Dome گنبد نمکی کمشک

# 36 Locked Peak · 2,000–2,999 m · Kerman 2972 m Kena کنا

# 752 Locked Peak · 3,000–3,999 m · Mazandaran 3300 m Keral tamar كرالتمر

# 948 Locked Peak · 3,000–3,999 m · Alborz 3146 m Kerekou کرکو

# 55 Locked Peak · 4,000–4,999 m · Isfahan 4303 m Keresmi کرسمی

# 143 Locked Waterfall · Kohgiluyeh and Boyer-Ahmad Keyvan Fall آبشار کیوان

# 286 Locked Peak · 3,000–3,999 m · Kerman 3865 m Khabr چاه برف

# 105 Locked Protected area · Kerman Khabr National Park پارک ملی خبر

# 92 Locked Waterfall · Isfahan Khafr Waterfall آبشار خفر

# 106 Locked Protected area · Razavi Khorasan Khajeh Forest Protected Area منطقه حافظت شده جنگل خواجه

# 631 Locked Peak · 3,000–3,999 m · Hamadan 3403 m Khaku خاکو

# 177 Locked Peak · 2,000–2,999 m · Isfahan 2221 m Khal Sefīd خال سفید

# 202 Locked Lake · Dam or reservoir · Zanjan Khalifehlu Soil Dam سد خاکی خلیفه لو

# 541 Locked Forest · Forest park · Razavi Khorasan Khalilabad Forest Park پارک جنگلی خلیلآباد

# 181 Locked Peak · 2,000–2,999 m · Hamadan 2853 m Khan Gormaz خان گرمز

# 107 Locked Protected area · Hamadan Khan Gormaz Protected Area منطقه حفاظت شده خانگرمز

# 109 Locked Spring · East Azerbaijan Khan spring چمشه خان

# 187 Locked Lake · Dam or reservoir · Lorestan Khanabad Dam Lake دریاچه سد خان آباد

# 77 Locked Valley or canyon · Qazvin Khar-Gosh Darreh خرگوش دره

# 928 Locked Peak · 3,000–3,999 m · Yazd 3160 m Kharanagh خرانق

# 525 Locked Peak · 3,000–3,999 m · Mazandaran 3530 m Kharchar خرچر

# 127 Locked River · Qazvin Khareh Rud

# 29 Locked Geological formation · Hormozgan Khargu Sand Ski (Scree) شن اسکی خرگو

# 78 Locked Valley or canyon · Hormozgan Khargu Valley دره خرگو

# 30 Locked Forest · Forest park · Tehran Khargush Darreh Forest Park خرگوش‌دره

# 34 Locked Island or coast · Bushehr Khark Island جزیره خارگ

# 108 Locked Protected area · Bushehr Khark Wildlife Refuge پناهگاه حیات وحش خارک

# 109 Locked Protected area · Bushehr Kharko National Nature Monument اثر طبیعی ملی خارکو

# 35 Locked Island or coast · Bushehr Kharku Island جزیره خارکو

# 891 Locked Peak · 3,000–3,999 m · Fars 3185 m Kharmankuh خرمن کوه

# 248 Locked Peak · 3,000–3,999 m · Tehran 3923 m Kharsang خرسنگ

# 30 Locked Geological formation · Kermanshah Kharsang خرسنگ

# 128 Locked River · Qazvin Kharud خرود

# 250 Locked Peak · 3,000–3,999 m · Qazvin 3917 m Khashechal خشچال