A high tensile strength hot rolled steel sheet having tensile strength of at least 980 MPa and excellent formability, comprising: a composition including by mass %, C: 0.07% to 0.13% (inclusive of 0.07% and 0.13%), Si: 0.3% or less, Mn: 0.5% to 2.0% (inclusive of 0.5% and 2.0%), P: 0.025% or less, S: 0.005% or less, N: 0.0060% or less, Al: 0.06% or less, Ti: 0.08% to 0.14% (inclusive of 0.08% and 0.14%), V: 0.15% to 0.30% (inclusive of 0.15% and 0.30%), Solute V: 0.04% to 0.1% (inclusive of 0.04% and 0.1%), Solute Ti: 0.05% or less, optionally at least one type of elements selected from Cr: 1% or less and B: 0.003% or less, optionally at least one type of elements selected from Nb and Mo such that the total content thereof is equal to or lower than 0.01%, and remainder consisting of Fe and incidental impurities; a microstructure with fine composite carbides dispersion precipitated therein, the fine composite carbides containing both Ti and V and having the average particle diameter of less than 10 nm, as well as volume ratio with respect to the entire microstructure of at least 0.007; and matrix as ferrite phase having area ratio with respect to the entire microstructure of at least 97%, wherein contents of C, Ti, V, S and N satisfy formula and formula below, Ti ≥ 0.08 + N / 14 × 48 + S / 32 × 48 0.8 ≤ Ti / 48 + V / 51 C / 12 ≤ 1.2 in formulae and, "C", "Ti", "V", "S" and "N" represent contents (mass %) of corresponding elements, respectively. a composition including by mass %, C: 0.07% to 0.13% (inclusive of 0.07% and 0.13%), Si: 0.3% or less, Mn: 0.5% to 2.0% (inclusive of 0.5% and 2.0%), P: 0.025% or less, S: 0.005% or less, N: 0.0060% or less, Al: 0.06% or less, Ti: 0.08% to 0.14% (inclusive of 0.08% and 0.14%), V: 0.15% to 0.30% (inclusive of 0.15% and 0.30%), Solute V: 0.04% to 0.1% (inclusive of 0.04% and 0.1%), Solute Ti: 0.05% or less, optionally at least one type of elements selected from Cr: 1% or less and B: 0.003% or less, optionally at least one type of elements selected from Nb and Mo such that the total content thereof is equal to or lower than 0.01%, and remainder consisting of Fe and incidental impurities; C: 0.07% to 0.13% (inclusive of 0.07% and 0.13%), Si: 0.3% or less, Mn: 0.5% to 2.0% (inclusive of 0.5% and 2.0%), P: 0.025% or less, S: 0.005% or less, N: 0.0060% or less, Al: 0.06% or less, Ti: 0.08% to 0.14% (inclusive of 0.08% and 0.14%), V: 0.15% to 0.30% (inclusive of 0.15% and 0.30%), Solute V: 0.04% to 0.1% (inclusive of 0.04% and 0.1%), Solute Ti: 0.05% or less, optionally at least one type of elements selected from Cr: 1% or less and B: 0.003% or less, optionally at least one type of elements selected from Nb and Mo such that the total content thereof is equal to or lower than 0.01%, and remainder consisting of Fe and incidental impurities; a microstructure with fine composite carbides dispersion precipitated therein, the fine composite carbides containing both Ti and V and having the average particle diameter of less than 10 nm, as well as volume ratio with respect to the entire microstructure of at least 0.007; and matrix as ferrite phase having area ratio with respect to the entire microstructure of at least 97%, wherein contents of C, Ti, V, S and N satisfy formula and formula below, Ti ≥ 0.08 + N / 14 × 48 + S / 32 × 48 0.8 ≤ Ti / 48 + V / 51 C / 12 ≤ 1.2 in formulae and, "C", "Ti", "V", "S" and "N" represent contents (mass %) of corresponding elements, respectively.